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Figure 8. Living animals. A, B, Berghia verruciconnis from Huelva. C, Berghia columbina from Huelva. D, E, Spurilla neapolitana from Huelva. F in The family Aeolidiidae Gray, 1827 (Gastropoda Opisthobranchia) from Brazil, with a description of a new species belonging to the genus Berghia Trinchese, 1877

Figure 8. Living animals. A, B, Berghia verruciconnis from Huelva. C, Berghia columbina from Huelva. D, E, Spurilla neapolitana from Huelva. F, Spurilla neapolitana from El Grove.

Figure 7 in The family Aeolidiidae Gray, 1827 (Gastropoda Opisthobranchia) from Brazil, with a description of a new species belonging to the genus Berghia Trinchese, 1877

Figure 7. SEM images of the radulae and jaws. A, radula of Berghia marcusi sp. nov. (12-mm-long specimen, from Praia de Aramaçao); scale bar = 20 Mm. B, masticatory border of the jaw of Berghia marcusi sp. nov. (12-mm-long specimen, from Praia de Aramaçao); scale bar = 5 Mm. C, D, radula of Berghia verrucicornis from Huelva; scale bar = 10 Mm. E, radula of Berghia columbina from Huelva; scale bar = 10 Mm. F, jaw of Berghia columbina from Huelva; scale bar = 100 Mm.

Figure 6 in The family Aeolidiidae Gray, 1827 (Gastropoda Opisthobranchia) from Brazil, with a description of a new species belonging to the genus Berghia Trinchese, 1877

Figure 6. Berghia marcusi sp. nov. A, dorsal view of the external morphology; scale bar = 5 mm. B, lateral view of a specimen, showing the arrangement of the cerata; scale bar = 1 mm. C, D, radular teeth (Praia dos Ossos, 5-mm-long specimen); scale bars = 10 Mm. E, detail of a tooth with piled up denticles (16.5-mm-long specimen, from Praia de Aramaçao). F, detail of a tooth with denticles ending in either two or more tips (16.5-mm long specimen, from Praia de Aramaçao).

Figure 5. Berghia creutzbergi. A in The family Aeolidiidae Gray, 1827 (Gastropoda Opisthobranchia) from Brazil, with a description of a new species belonging to the genus Berghia Trinchese, 1877

Figure 5. Berghia creutzbergi. A, lateral view of a specimen, showing the arrangement of the cerata; scale bar = 1 mm. B, radular tooth (13-mm-long specimen, from Praia de Armação); scale bar = 100 Mm.

Figure 11 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 11. Notholebias minimus, male, not preserved, about 20-mm standard length (1 day after collection); Brazil, Estado do Rio de Janeiro, Seropédica (photo by W. J. E. M. Costa).

Figure 8. Leptolebias itanhaensis, UFRJ 6453 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 8. Leptolebias itanhaensis, UFRJ 6453, male, holotype, 20.7-mm standard length (some hours after collection); Brazil, Estado de São Paulo, Itanhaém (photo by W. J. E. M. Costa).

Figure 7. Leptolebias aureoguttatus, UFRJ 6331 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 7. Leptolebias aureoguttatus, UFRJ 6331, female, 16.5-mm standard length (some hours after collection); Brazil, Estado do Paraná, Praia de Leste (photo by W. J. E. M. Costa).

Figure 4. Berghia benteva. A in The family Aeolidiidae Gray, 1827 (Gastropoda Opisthobranchia) from Brazil, with a description of a new species belonging to the genus Berghia Trinchese, 1877

Figure 4. Berghia benteva. A, dorsal view of the external morphology; scale bar = 5 mm. B, lateral view of a specimen, showing the arrangement of the cerata; scale bar = 5 mm. C, D, radular teeth (10-mm-long specimen, from Praia de Armação); scale bars = 100 Mm.

Figure 4 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 4. Geographical distribution of Leptolebias in São Paulo and Paraná states, southern Brazil: L. aureoguttatus (•) and L. itanhaensis (Ɨ).

Figure 3 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 3. Osteological features in Leptolebias and Notholebias: A, medial portion of hyoid and branchial skeleton, dorsal view, of Leptolebias citrinipinnis. B, medial portion of hyoid and branchial skeleton, dorsal view, of Notholebias fractifasciatus. C, anguloarticular region, left side, lateral view, of L. citrinipinnis. D, jaw suspensorium, left side, lateral view, of N. fractifasciatus. Abbreviations: AA, anguloarticular; B1–B3, basibranchials 1–3; BB, basibranchial cartilage; BC, basihyal cartilage; BH, basihyal; H1–H3, hypobranchials 1–3; HY, hyomandibula; MS, mesopterygoid; MT, metapterygoid; PL, autopalatine; PO, preopercle; QU, quadrate; RA, retroarticular; SY, sympletic. Larger stippling indicates cartilage. Scale bar: 1 mm.

Figure 1. Most parsimonious phylogeny among 12 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 1. Most parsimonious phylogeny among 12 species of the Rivulidae (tree length, L = 118; consistency index, CI = 0.82; retention index, RI = 0.85). Numbers above branches are bootstrap values.

Figure 2 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 2. Frontal squamation and neuromast pattern in Leptolebias aureoguttatus. Abbreviations: A–H, frontal scales A–H; AIS, anterior infraorbital series; AN, anterior nostril; ARN, anterior rostral neuromast; ASN, anterior supraorbital neuromast; PAS, parietal series; PBS, preorbital series; PN, posterior nostril; PRN, posterior rostral neuromast; PSS, posterior supraorbital series. Scale bar: 1 mm.

Figure 5 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 5. Geographical distribution of Leptolebias in Rio de Janeiro state, south-eastern Brazil: 1, L. marmoratus, L. splendens, and L. opalescens; 2, L. marmoratus and L. opalescens; 3, L. splendens; 4, L. citrinipinnis.

Figure 10 in Monophyly and taxonomy of the Neotropical seasonal killifish genus Leptolebias (Teleostei: Aplocheiloidei: Rivulidae), with the description of a new genus

Figure 10. Leptolebias itanhaensis, male, not preserved; Brazil, Estado de São Paulo, Itanhaém (photo by G. C. Brazil).

Figure 12 in Description of a new species of Mesochaetopterus (Annelida, Polychaeta, Chaetopteridae), with redescription of Mesochaetopterus xerecus and an approach to the phylogeny of the family

Figure 12. Mesochaetopterus rogeri sp. nov., seasonal pattern in abundance at Punta del Tordera, in relation to water temperature and wave height. A, Water temperature at 20-m deep and significant wave height. B, Population density.

Figure 11. Mesochaetopterus xerecus. A, Dorsalmost uncini from neuropodia B1. B, Ventralmost uncini from neuropodia B1. C, Uncini from notopodia B2. D, Uncini from neuropodia B2. E, Uncini from notopodia B3. F, Uncini from neuropodia B3. G in Description of a new species of Mesochaetopterus (Annelida, Polychaeta, Chaetopteridae), with redescription of Mesochaetopterus xerecus and an approach to the phylogeny of the family

Figure 11. Mesochaetopterus xerecus. A, Dorsalmost uncini from neuropodia B1. B, Ventralmost uncini from neuropodia B1. C, Uncini from notopodia B2. D, Uncini from neuropodia B2. E, Uncini from notopodia B3. F, Uncini from neuropodia B3. G, Uncini from the anterior region of notopodia C2. H, Uncini from the posterior region of notopodia C2. I, Uncini from the anterior region of neuropodia C2. J, Uncini from the posterior region of neuropodia C2. K, Uncini from notopodia C30. L, Uncini from neuropodia C30. Scale bars are in Mm.

Figure 10. Mesochaetopterus xerecus. A in Description of a new species of Mesochaetopterus (Annelida, Polychaeta, Chaetopteridae), with redescription of Mesochaetopterus xerecus and an approach to the phylogeny of the family

Figure 10. Mesochaetopterus xerecus. A, Chaetal arrangement of the modified A4 chaetiger. B–J, Chaetae. B, Tip of the dorsal finely pointed lancet-like chaeta 'd'. C, Dorsolateral transparent knife-like chaeta 'ld1'. D, Dorsolateral transparent knife-like chaeta 'ld2'. E, Dorsolateral brownish knife-like chaeta 'ld3'. F, Lateroventral brownish knife-like chaeta 'ld3'. G, H, I, Typical modified chaetae: lv2, lateral; lv3, lateroventral; v, ventralmost. J, Tip for the ventralmost modified chaeta 'v'. Scale bars are in Mm.

Figure 9. Mesochaetopterus xerecus. A, Dorsalmost capillary chaeta from A8. B in Description of a new species of Mesochaetopterus (Annelida, Polychaeta, Chaetopteridae), with redescription of Mesochaetopterus xerecus and an approach to the phylogeny of the family

Figure 9. Mesochaetopterus xerecus. A, Dorsalmost capillary chaeta from A8. B, Dorsolateral fine-lanceolate chaeta from A8. C, Lateroventral sickle-like chaeta from A8. D, Tip of the lateroventral sickle-like chaeta from A8. E, Ventralmost lancet-like chaeta from A8. F, Tip of the ventralmost lancet-like chaeta from A8. G, Ventralmost sickle-like chaeta from A10. Scale bars are in Mm.

Figure 7. Mesochaetopterus xerecus. A in Description of a new species of Mesochaetopterus (Annelida, Polychaeta, Chaetopteridae), with redescription of Mesochaetopterus xerecus and an approach to the phylogeny of the family

Figure 7. Mesochaetopterus xerecus. A, Dorsal view of region A (preserved). B, Ventral view of region A (preserved). C–J, Chaetae. C, Dorsalmost capillary chaeta from A1. D, Dorsolateral fine-lanceolate chaeta from A1. E, Ventral oar-like chaeta from A1. F, Tip of the ventral oar-like chaeta from A1. G, Dorsalmost fine-lanceolate chaeta from A3. H, Tip of the dorsalmost fine-lanceolate chaeta from A3. I, Ventral oar-like chaeta from A3. J, Tip of the ventral oar-like chaeta from A3. Scale bars are in cm in A and B, and are in Mm in C–J.

Figure 6 in Description of a new species of Mesochaetopterus (Annelida, Polychaeta, Chaetopteridae), with redescription of Mesochaetopterus xerecus and an approach to the phylogeny of the family

Figure 6. Mesochaetopterus rogeri sp. nov. A, Dorsalmost uncini from neuropodia B1. B, Ventralmost uncini from neuropodia B1. C, Uncini from notopodia B2. D, Uncini from neuropodia B2. E, Uncini from notopodia B3. F, Uncini from neuropodia B3. G, Uncini from the anterior region of notopodia C2. H, Uncini from the posterior region of notopodia C2. I, Uncini from the anterior region of neuropodia C2. J, Uncini from the posterior region of neuropodia C2. Scale Bars are in Mm.