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FIGURE 3 in A new solar powered species of the genus Phyllodesmium Ehrenberg, 1831 (Mollusca: Nudibranchia: Aeolidoidea) from Indonesia with analysis of its photosynthetic activity and notes on biology

FIGURE 3: Phyllodesmium jakobsenae, hard structures in digestive system: A: Right jaw seen from the outside. B: Left jaw from the inside, denticles at the masticatory border seen from the inside. C: Distal part of radula of specimen No. 5. D: Closeup of distal part of radula of specimen No. 5; note the worn denticles on the edge of the rhachidian teeth .. E: Distal part of radula of specimen No. 3. F: Different angle of view of rhachidian cusps from No. 3. G: Part of the radula of specimen No. 3.

FIGURE 4 in A new solar powered species of the genus Phyllodesmium Ehrenberg, 1831 (Mollusca: Nudibranchia: Aeolidoidea) from Indonesia with analysis of its photosynthetic activity and notes on biology

FIGURE 4: Phyllodesmium jakobsenae, histology: A: View of ceras from side orientated to light. Note the dense branches along the whole ceras. B: View of ceras from side orientated away from light. Note the main branch of digestive gland and the fewer ramifications. C: Cnidosac of large ceras with no nematocysts. D: Digestive glandular branches beneath epidermis in large ceras. Note the many zooxanthellae especially in the digestive glandular tissue. E: Longitudinal section of small ceras with cnidosac. The digestive glandular duct is not branching, and shows glandular cells. The cnidosac is filled with many tiny nematocysts. The epidermis shows many glandular cells, beneath the epidermis a layer of “ cellules spéciales ” can be seen. F: Section trough eye and statocyst with one statolith. G: Small part of the oral gland with outleading duct. Abbreviations: cn cnidosac, cs “ cellules spéciales ”, e eye, mc mucous cells, st statocyst.

FIGURE 1 in A new solar powered species of the genus Phyllodesmium Ehrenberg, 1831 (Mollusca: Nudibranchia: Aeolidoidea) from Indonesia with analysis of its photosynthetic activity and notes on biology

FIGURE 1: Phyllodesmium jakobsenae, living animals from North Sulawesi: A: Specimen laying eggs in an aquarium. B: Two specimens sitting in their food coral Xenia: on the right side a specimen with more brownish cerata and to the left a bigger specimen with more whitish cerata. Polyps of Xenia surround both individuals. C: Bigger specimen from B; please note the smaller cerata in the anterior part of body and the oral tentacles stretched to the lateral sides. D: Animal sitting inactive and mimicking Xenia polyps. E: Specimen starting to crawl.

FIGURE 1 in Taxonomic revision of Elimia christyi and E. interrupta (Mollusca: Caenogastropoda: Pleuroceridae)

FIGURE 1. Shells and radulae from recognized and nominal Elimia species. A. Eight landmarks used for morphometric analyses shown on an illustration of E. interrupta modified from Burch and Tottenham (1980). B. E. interrupta, lectotype, ANSP 8760 a, 13.6 mm x 7.4 mm. C. Goniobasis christyi, lectotype, USNM 18451, 16.5 mm x 9 mm. D. G. instabilis, lectotype, USNM 118976, 13.2 mm x 7.5 mm. D. E. interrupta, NCSM 29499, 13.6 mm x 7.2 mm. E. E. interrupta, NCSM 6595, rachidian and laterals. Scale bar 100 µm. F. E. interrupta, NCSM 6595, marginals. Scale bar 100 µm.

FIGURE 18. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 18. a – c: Turbonilla micans (Monterosato, 1875), sample BC 51, scale bars: 0.5 mm (a), 0.2 mm (b – c, protoconch); d – f: Graphis gracilis (Monterosato, 1874), sample BC 72, scale bars: 0.5 mm (d), 0.2 mm (e – f, protoconch); g – i: Crenilabium exile (Jeffreys, 1870), samples BC 67 (g) and BC 04 (h – i), scale bars: 2 mm (g), 0.2 mm (h – i, protoconch); j – l: Japonacteon pusillus (MacGillivray, 1843), sample BC 72, scale bars: 2 mm (j), 0.2 mm (k – l, protoconch); m – o: Callostracon thyrrenicum (Smriglio & Mariottini, 1996), sample BC 71, scale bars: 1 mm (m), 0.2 mm (n – o, protoconch).

FIGURE 19. a – b in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 19. a – b: Ringicula sp., sample BC 72, scale bars: 0.5 mm (a), 0.1 mm (b, protoconch); c – d: Diaphana globosa (Lovén, 1846), sample BC 05, scale bars: 1 mm (c), 0.2 mm (d, protoconch); e – f: Diaphana cf. lactea (Jeffreys, 1877), sample BC 05, scale bars: 1 mm (e), 0.2 mm (f, protoconch); g – j: Philine quadrata (Wood, 1839), samples BC 72 (g – h) and BC 05 (i – j), scale bars: 2 mm (g – h), 0.2 mm (i – j, protoconch); k – n: Philine scabra (Müller, 1784), sample BC 72, scale bars: 2 mm (k), 0.5 mm (l, juvenile), 0.2 mm (m – n, protoconch); o – q: Roxania monterosatoi Dautzenberg & Fischer, 1896, samples BC 67 (o) and BC 72 (p – q), scale bars: 1 mm (o), 0.5 mm (p, juvenile), 0.2 mm (q, protoconch).

FIGURE 17. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 17. a – c: Mathilda cochlaeformis Brugnone, 1873, samples BC 71 (a) and BC 66 (b – c), scale bars: 2 mm (a), 0.2 mm (b – c, protoconch); d – g: Mathilda coronata Monterosato, 1875, sample BC 71, scale bars: 2 mm (d), 0.2 mm (e – g, protoconch); h – j: Eulimella scillae (Scacchi, 1835), sample BC 72, scale bars: 1 mm (h), 0.2 mm (i – j, protoconch); k – m: Eulimella unifasciata (Forbes, 1844), sample BC 72, scale bars: 2 mm (k), 0.2 mm (l – m, protoconch); n – o: Chrysallida flexuosa (Monterosato, 1874), sample BC 67, scale bars: 0.5 mm (n), 0.2 mm (o, protoconch); p – r: Liostomia sp., sample BC 72, scale bars: 1 mm (p), 0.2 mm (q – r, protoconch).

FIGURE 16. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 16. a – c: Pleurotomella gibbera Bouchet & Warén, 1980, sample BC 66, scale bars: 1 mm (a), 0.2 mm (b – c, protoconch); d – f: Discotectonica discus (Philippi, 1844), sample BC 72, scale bars: 2 mm (d – e), 0.2 mm (f, protoconch); g – h: Pseudomalaxis zanclaeus (Philippi, 1844), sample BC 72, scale bar 5 mm; i – k: Solatisonax alleryi (Seguenza, 1876), sample BC 72, scale bars: 2 mm (i – j), 0.2 mm (k, protoconch); l – n: Solatisonax bannocki (Melone & Taviani, 1980), sample BC 71, scale bars: 2 mm (l – m), 0.2 mm (n, protoconch); o – q: Spirolaxis centrifugus (Monterosato, 1890), sample BC 72, scale bars: 1 mm (o – p), 0.2 mm (q, protoconch).

FIGURE 13. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 13. a – c: Akritogyra conspicua (Monterosato, 1880), sample BC 05, scale bars: 0.5 mm (a – b), 0.1 mm (c, protoconch); d – f: Epitonium tiberii (de Boury, 1889), sample BC 66, scale bars: 0.5 mm (d), 0.1 mm (e – f, protoconch); g – i: Alvania cimicoides (Forbes, 1844), sample BC 72, scale bars: 1 mm (g), 0.1 mm (h – i, protoconch); j – l: Alvania testae (Aradas & Maggiore, 1844), sample BC 72, scale bars: 0.5 mm (j), 0.1 mm (k – l, protoconch); m – o: Benthonella tenella (Jeffreys, 1869), sample BC 04, scale bars: 0.5 mm (m), 0.1 mm (n – o, protoconch).

FIGURE 15. a – d in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 15. a – d: Drilliola loprestiana (Calcara, 1841), sample BC 05, scale bars: 1 mm (a), 0.5 mm (b – c, protoconch), 0.1 mm (d, PI detail); e – h: Mangelia nuperrima (Tiberi, 1855), samples BC 05 (e) and BC 72 (f – h), scale bars: 2 mm (e), 0.5 mm (f – g, protoconch), 0.1 mm (h, PI detail); i: Mangelia serga (Dall, 1881), sample BC 72, scale bar 2 mm; j – l: Pleurotomella eurybrocha (Dautzenberg & Fischer, 1896), sample BC 21, scale bars: 0.5 mm (j), 0.2 mm (k – l, protoconch); m – p: Teretia teres (Reeve, 1844), sample BC 72, scale bars: 1 mm (m), 0.2 mm (n – o, protoconch), 0.1 mm (p, PI detail); q – t: Pleurotomella demosia (Dautzenberg & Fischer, 1896), sample BC 71, scale bars: 2 mm (q), 0.2 mm (r – s, protoconch), 0.1 mm (t, PI detail).

FIGURE 14. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 14. a – c: Pagodula echinata (Kiener, 1840), sample BC 72, scale bars: 5 mm (a), 0.5 mm (b – c, protoconch); d – g: Nassarius lima (Dillwyn, 1817), sample BC 72, scale bars: 5 mm (d), 1 mm (e, juvenile), 0.5 mm (f – g, protoconch); h – j: Amphissa acutecostata (Philippi, 1844), sample BC 72, scale bars: 2 mm (h), 0.5 mm (i – j, protoconch); k – m: Fusinus rostratus (Olivi, 1792), sample BC 72, scale bars: 5 mm (k), 0.5 mm (l – m, protoconch); n – p: Drilliola emendata (Monterosato, 1872), sample BC 67, scale bars: 2 mm (n), 0.5 mm (o – p, protoconch).

FIGURE 12. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 12. a – c: Anatoma aspera (Philippi, 1844), sample BC 71, scale bars: 1 mm (a – b), 0.1 mm (c, protoconch); d: Danilia tinei (Calcara, 1839), sample BC 72, scale bar 5 mm; e – g: Cirsonella romettensis (Granata – Grillo, 1877), sample BC 67, scale bars: 1 mm (e – f), 0.1 mm (g, protoconch); h – j: Putzeysia wiseri (Calcara, 1842), sample BC 66, scale bars: 2 mm (h), 0.2 mm (i – j, protoconch); k – m: Mikro? sp., sample BC 52, scale bars: 0.2 mm (k – l), 0.1 mm (m, protoconch); n – p: Adeuomphalus densicostatus (Jeffreys, 1884), sample BC 72, scale bars: 0.2 mm (n – o), 0.1 mm (p, protoconch).

FIGURE 11. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 11. a – c: Antalis agilis (Sars M. in Sars G. O., 1872), samples BC 04 (a) and BC 72 (b – c), scale bars: 5 mm (a), 0.2 mm (b, posterior aperture), 1 mm (c, anterior aperture); d – f: Entalina tetragona (Brocchi, 1814), sample BC 72, scale bars: 2 mm (d), 0.1 mm (e, posterior aperture), 0.5 mm (f, anterior aperture); g: Cadulus subfusiformis (Sars M., 1865), sample BC 52, scale bar 0.5 mm; h – k: Propilidium exiguum (Thompson, 1844), sample BC 66, scale bars: 1 mm (h – i), 0.1 mm (j – k, protoconch); l – n: Emarginula adriatica (Costa O. G., 1830), sample BC 72, scale bars: 2 mm (l – m), 0.1 mm (n, protoconch); o – q: Emarginula multistriata Jeffreys, 1882, sample BC 70, scale bars: 1 mm (o – p), 0.1 mm (q, protoconch); r – t: Emarginula tenera Locard, 1982, sample BC 71, scale bars: 1 mm (r – s), 0.1 mm (t, protoconch).

FIGURE 10. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 10. a – c: Allogramma formosa (Jeffreys, 1882); RV, sample BC 72, scale bars: 2 mm (a – b), 0.1 mm (c, prodissoconch); d – e: Poromya granulata (Nyst & Westendorp, 1839); LV, sample BC 72, scale bar 1 mm; f – h: Cuspidaria lamellosa (Sars G. O. ex Sars M., 1872); RV (f, h) and LV (g), sample BC 72, scale bars: 1 mm (f – g), 0.1 mm (h, prodissoconch); i – k: Cuspidaria rostrata (Spengler, 1793); RV, samples BC 66 (i – j) and BC 72 (k), scale bars: 5 mm (i – j), 0.1 mm (k, prodissoconch); l – n: Tropidomya abbreviata (Forbes, 1843); LV, sample BC 72, scale bars: 5 mm (m), 2 mm (l, juvenile), 0.1 mm (n, prodissoconch); o – q: Cardiomya costellata (Deshayes, 1835); RV, sample BC 72, scale bars 2 mm (o – p), 0.1 mm (q, prodissoconch).

FIGURE 9. a – d in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 9. a – d: Kelliella miliaris (Philippi, 1844); RV (a, c) and LV (b, d), sample BC 72, scale bars: 1 mm (a – c), 0.1 mm (d, prodissoconch); e – f: Hiatella arctica (Linnaeus, 1767); RV, sample BC 70, scale bar 5 mm; g – i: Xylophaga dorsalis (Turton, 1819); RV, samples BC 66 (h – i) and BC 72 (g), scale bars: 0.5 mm (g – h), 0.1 mm (i, prodissoconch); j – l: Panacca loveni (Jeffreys, 1882); LV, samples BC 70 (j – k) and BC 05 (l), scale bars 10 mm (j – k), 0.1 mm (l, prodissoconch); m – o: Panacca? sp.; RV (m, n) and LV (o), sample BC 72, scale bars: 5 mm (m – n), 0.1 mm (o, prodissoconch; the arrow points at the ventral sinuation).

FIGURE 8. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 8. a – c: Montacuta substriata (Montagu, 1808); RV, sample BC 72, scale bars: 1 mm (a – b), 0.1 mm (c, prodissoconch); d – f: Tellimya tenella (Lovén, 1846); RV, sample BC 72, scale bars: 1 mm (d – e), 0.1 mm (f, prodissoconch); g – i: Kurtiella cf. tumidula (Jeffreys, 1866); RV, sample BC 67, scale bars: 0.5 mm (g – h), 0.1 mm (i, prodissoconch); j – m: Parvicardium minimum (Philippi, 1836); RV (j, m) and LV (k), sample BC 71, scale bars: 1 mm (j – k), 0.1 mm (l, prodissoconch), 0.02 mm (m, P – 1 detail); n – p: Abra longicallus (Scacchi, 1835); LV, sample BC 70, scale bars: 5 mm (n – o), 0.1 mm (p, prodissoconch).

FIGURE 3. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 3. a – c: Yoldiella nana (Sars M., 1865); RV (b, c) and LV (a), sample BC 72, scale bars: 0.5 mm (a – b), 0.1 mm (c, prodissoconch); d – f: Yoldiella philippiana (Nyst, 1844); RV, sample BC 72, scale bars: 1 mm (d – e), 0.1 mm (f, prodissoconch); g – i: Yoldiella striolata (Brugnone, 1876); RV, sample BC 72, scale bars: 1 mm (g – h), 0.1 mm (i, prodissoconch); j – m: Asperarca nodulosa (Müller, 1776); LV, sample BC 11, scale bars: 5 mm (j – k), 1 mm (l, juvenile), 0.1 mm (m, prodissoconch).

FIGURE 7. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 7. a – c: Axinulus alleni (Carrozza, 1981); RV, sample BC 72, scale bars: 1 mm (a – b), 0.1 mm (c, prodissoconch); d – f: Thyasira flexuosa (Montagu, 1803); RV (e, f) and LV (d), sample BC 72, scale bars: 2 mm (d – e), 0.1 mm (f, prodissoconch); g – i: Genaxinus eumyarius (Sars M., 1870); RV (h, i) and LV (g), sample BC 72, scale bars: 1 mm (g – h), 0.1 mm (I, prodissoconch); j – l: Leptaxinus subovatus (Jeffreys, 1881); RV, sample BC 72, scale bars: 1 mm (j – k), 0.1 mm (l, prodissoconch); m – o: Mendicula ferruginosa (Forbes, 1844); RV, sample BC 72, scale bars: 1 mm (m – n), 0.1 mm (o, prodissoconch).

FIGURE 2. a – b in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 2. a – b: Nucula sulcata Bronn, 1831; RV, sample BC 06, scale bar: 5 mm; c – e: Ennucula aegeensis (Forbes, 1844); RV (c, e) and LV (d), sample BC 72, scale bars: 1 mm (c – d), 0.1 mm (e, prodissoconch); f – h: Ledella messanensis (Jeffreys, 1870); LV, sample BC 72, scale bars: 1 mm (f – g), 0.1 mm (h, prodissoconch); i – k: Malletia obtusa (Sars M. in Sars G. O., 1872); RV (j, k) and LV (i), samples BC 72 (i) and BC 71 (j – k), scale bars: 2 mm (i – j), 0.1 mm (k, prodissoconch); l – n: Pristigloma minima (Seguenza, 1877); RV (m) and LV (l, n), sample BC 72, scale bars: 0.5 mm (l – m), 0.1 mm (n, prodissoconch); o – q: Yoldiella lucida (Lovén, 1846); RV, sample BC 72, scale bars: 1 mm (o – p), 0.1 mm (q, prodissoconch).

FIGURE 6. a – c in Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy)

FIGURE 6. a – c: Spondylus gussonii Costa, 1830; LV, samples BC 11 (a – b) and BC 71 (c), scale bars: 5 mm (a – b), 0.1 mm (c, prodissoconch); d – g: Heteranomia squamula (Linnaeus, 1758); LV, samples BC 11 (d – e) and BC 72 (f – g), scale bars: 5 mm (d – e), 0.5 mm (f, juvenile), 0.1 mm (g, prodissoconch); h – j: Limaria loscombi (Sowerby G. B. I, 1823); RV, sample BC 72, scale bars: 2 mm (h – i), 0.1 mm (j, prodissoconch); k – m: Limatula subauriculata Montagu, 1808; RV (k, m) and LV (l), samples BC 71 (k, m) and BC 72 (l), scale bars: 1 mm (k – l), 0.1 mm (m, prodissoconch); n – p: Limea crassa (Forbes, 1844); RV (o) and LV (n, p), samples BC 71 (n, p) and BC 72 (o), scale bars: 1 mm (n – o), 0.1 mm (p, prodissoconch).