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FIGURE 11 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 11. Syllis aciculigrossa. (A) anterior body, dorsal view; (B) spiniger-like chaeta, posterior body chaetiger; (C–D) falcigers, anterior and posterior body chaetigers, respectively; (E–F) dorsal and ventral simple chaetae, respectively; (G–I) aciculae, anterior, mid- and posterior body chaetigers, respectively.

FIGURE 8 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 8. Sphaerosyllis ceciliae sp. nov. (A, I) anterior body, dorsal view; (B) midbody parapodium; (C, M) dorsal simple chaetae; (D) ventral simple chaeta; (E) acicula; (F–H, K–L) falcigers; (J) midbody parapodia, dorsal view.; N, posterior end, dorsal view.

FIGURE 5 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 5. Parexogone campoyi, SEM. (A) entire worm (posteriorly incomplete, broken); (B–C) anterior body, dorsal and ventral views, respectively; (D) close up of the oral area.

FIGURE 6 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 6. Parexogone campoyi, SEM. (A–B) parapodia, anterior body chaetigers; (C) falcigers, anterior body chaetigers; (D–E) parapodia and falcigers, midbody chaetigers; (F–G) dorsal simple chaetae, midbody chaetigers.

FIGURE 7 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 7. Parexogone minuscula. (A) anterior body, dorsal view; (B–C, F) falcigers, anterior, mid- and posterior body chaetigers, respectively; (D–E) dorsal simple chaetae, anterior and posterior body chaetigers, respectively; (G) ventral simple chaeta; (H) acicula; SEM: (I–K) falcigers.

FIGURE 14 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 14. Anguillosyllis lanai sp. nov. (A) entire worm, dorsal view; (B) midbody parapodium, posterior view; (C–D) falcigers and spiniger-like chaetae, respectively; (E) tip of acicula; SEM: (F) left-hand parapodia, chaetigers 2–3, dorsal view; (G) close up of a parapodial gland, chaetiger 3.

FIGURE 9 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 9. Sphaerosyllis ceciliae sp. nov., SEM. (A) anterior body, dorsal view; (B) detail of prostomium, peristomium and first chaetigers, dorsal view; (C) posterior body, dorsal view; (D) left-hand parapodia, chaetigers 1 and 2, dorsal view; (E) dorsal simple chaetae, posterior body chaetiger; (F) spiniger-like chaeta, chaetiger 3; (G) parapodium, chaetiger 1, dorsal view; (H) anterior to midbody chaetigers; (I) posterior body parapodia, ventral view.

FIGURE 4 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 4. Parexogone campoyi. (A, J) anterior body, dorsal view; (B) dorsal simple chaeta; (C) ventral simple chaeta; (D–E) aciculae, anterior and posterior body chaetigers, respectively; (F–I, K–L) falcigers, midbody chaetigers.

FIGURE 3 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 3. Parexogone wolfi. (A) anterior body, dorsal view; (B–D) compound chaetae, anterior, mid- and posterior body chaetigers, respectively; (E–F) dorsal simple chaetae, anterior and posterior body chaetigers, respectively; (G) ventral simple chaeta; (H–I) aciculae, anterior and posterior body chaetigers, respectively; SEM: (J) anterior end, right lateral view; (K) spiniger-like chaeta, midbody chaetiger; (L) falcigers, midbody chaetiger.

FIGURE 2 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 2. Exogone anomalochaeta, SEM. (A) entire worm, dorsal view; (B–C) anterior body, dorsal and ventral views, respectively; (D) detail of prostomium and peristomium, right dorso-lateral view; (E) nuchal organ; (F) dorsalmost falciger, midbody chaetiger; (G–H) chaetae, chaetiger 1; (I) chaetae, midbody chaetiger.

FIGURE 1 in Deep sea Syllidae (Annelida, Phyllodocida) from Southwestern Atlantic

FIGURE 1. Exogone anomalochaeta. (A) anterior body, dorsal view; (B–C) falcigers, anterior and mid- to posterior body chaetigers, respectively; (D, H) aciculae, anterior and posterior body chaetigers, respectively; (E–F) dorsal simple chaetae, anterior and posterior body chaetigers, respectively; (G) ventral simple chaeta.

FIGURES 48–56. Brianella corniger Wilson, 1915 in Parasitic copepods infesting the olfactory sacs of skates from the southwestern Atlantic with the description of a new species of Kroeyerina Wilson, 1932

FIGURES 48–56. Brianella corniger Wilson, 1915. SEM micrographs (female). 48, tip of cephalothorax (oral region), ventral; 49, tip of antennule; 50, antenna (arrows indicate the three naked setae); 51, maxillule; 52, mouth tube, with tips of mandibles inside, 53; fused tip of maxillae and origin of the two processes of the attachment organ (distal portion of maxillae); 54, detail of vestigial bulla; 55, attachment organ; 56, attachment organ (dissected from base) showing asymmetric branching. Scale bars: 48, 54 = 50 µm; 49, 52 = 10 µm; 50–51 = 20 µm; 53 = 200 µm; 55–56 = 1 mm.

FIGURES 32–39 in Parasitic copepods infesting the olfactory sacs of skates from the southwestern Atlantic with the description of a new species of Kroeyerina Wilson, 1932

FIGURES 32–39. Kroeyerina sudamericana sp. nov. SEM micrographs (adult female). 32, general habitus, ventral; 33, caudal rami; 34, detail of distal armature of caudal ramus; 35, fifth leg; 36, rostral processes; 37, mouth tube and maxillules; 38, maxilla; 39, maxilliped. Scale bars: 32 = 500 µm; 33, 37, 39 = 50 µm; 34–36 = 10 µm; 38 = 20 µm.

FIGURES 40–47 in Parasitic copepods infesting the olfactory sacs of skates from the southwestern Atlantic with the description of a new species of Kroeyerina Wilson, 1932

FIGURES 40–47. Kroeyerina sudamericana sp. nov. SEM micrographs (adult male). 40, general habitus, ventral; 41, caudal rami; 42, detail of distal armature of caudal rami; 43, spinulation in lateral fields of genital complex; 44, rostral processes; 45, antenna; 46, mouth tube and maxilla; 47, maxilliped. Scale bars: 40 = 200 µm; 41 = 50 µm; 42–44 = 10 µm; 45–47 = 20 µm.

FIGURE 27 in Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters

FIGURE 27. Microdeuthria michaelseni (Strebel, 1905). A–C. Euthria michaelseni Strebel, 1905, syntype, ZMH3121 (ex M196, no. 8 from Strebel, 1905: 622), Port Stanley, Malvinas (Falkland) Islands. D–E. Canal Beagle, MACN-In 40547. F–G. 34°50'S, 52°20'W, MACN-In 16664. H–I. Euthria mulachi Strebel, 1905. ZMH3122, Picton Island, Banner Cove, Chile, syntype. J. Navarino Is., Puerto Eugenia, (ex SE 6229 (768) #5 from Strebel, 1905: 622). K–L. Euthria janseni Strebel, 1905, ZMH3118 (ex M168 #2 from Strebel, 1905: 623), Picton Island, Banner Cove, Chile, syntype, Scale bar = 3 mm. M. Detail of the spiral ornamentation of the figure O, scale bar = 120 µm. N–O. Two views of the protoconch, scale bar = 800 µm.

FIGURE 28 in Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters

FIGURE 28. Microdeuthria michaelseni (Strebel, 1905). A–D. Four views of the radula, A-C SEM images, D, light microscope, scale bars: A = 50 µm; B = 10 µm; C = 20 µm; D = 23 µm. E–F. Penis and detail of the papilla, scale bars: E = 100 µm, F = 500 µm. G. External and internal view of two opercula, scale bar = 1 mm.

FIGURE 22 in Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters

FIGURE 22. Argeneuthria euthrioides (Melvill & Standen, 1898). A–C. three views of the radula, scale bars: A = 20 µm, B = 10 µm; C = 50 µm. D. external and internal view of the operculum, scale bar = 500 µm. E. critical point dry of the penis, scale bar = 200 µm.

FIGURE 26 in Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters

FIGURE 26. Argeneuthria varicosa sp. nov. A–C. Radula, A: dorsal view, scale bar = 20 µm; B: detail of the lateral tooth, scale bar = 25 µm; C: dorsal view, scale bar = 100 µm. D. Penis, critical point dried, scale bar =500 µm. E. SEM detail of the spiral ornamentation without periostracum, scale bar = 200 µm. F. SEM detail of the spiral ornamentation with periostracum, scale bar = 200 µm.

FIGURE 19 in Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters

FIGURE 19. Argeneuthria paessleri (Strebel, 1905). A–D. MACN-In 40539, Ushuaia. E–F. MACN-In 36930; scale bar = 5 mm. G–H. Two views of the protoconch, scale bar = 500 µm. I. Penis, critical point dried, scale bar = 200 µm. J. External view of the operculum, scale bar = 50 µm.

FIGURE 18 in Revision of the genera Pareuthria Strebel, 1905, Glypteuthria Strebel, 1905 and Meteuthria Thiele, 1912 (Gastropoda: Buccinulidae) with the description of three new genera and two new species from Southwestern Atlantic waters

FIGURE 18. Argeneuthria cerealis (Rochebrune & Mabille, 1885). A–C. Three views of the radula, scale bars = 20 µm.