FIGURE 3. Transversal distribution of paragnaths in the furrow and ridge regions. A, Alitta succinea (ECOSUR P2729), five rows in two bands. B, distances among rows in region A of A. succinea, showing the gap between the bands. C, Nereis garwoodi (ECOSUR P2831), two rows in two bands. D, distances among rows in region A of N. garwoodi, showing the gap between the bands. E, Hediste cf. diversicolor (USNM 58131), three rows in two bands. F, distances among rows in region Br of H. cf. diversicolor, showing the gap between the bands. G, Perinereis floridana (ECOSUR P1100), three rows in two bands. H, distances among rows in region A of P. floridana, showing the gap between the bands. I, Pseudonereis gallapagensis (USNM 24266), two rows and one ...
FIGURE 3. Parapodial structures of Alitta acutifolia (Ehlers, 1901). Atokous specimen from Puntarena...
FIGURE 3. Nereis alacranensis n. sp. (Paratype). (A) Peristomium, ventral view. (B) Close-up of the ...
FIGURE 2. Nereis alacranensis n. sp. (A) Anterior end, dorsal view. (B) Anterior end, ventral view (...
FIGURE 3. Transversal distribution of paragnaths in the furrow and ridge regions. A, Alitta succinea...
FIGURE 4. Longitudinal distribution of paragnaths in the furrow and ridge regions. A, Neanthes cf. a...
FIGURE 5. Classification of some rectangular-base paragnaths. A, shield-shaped bars. B, crescent-sha...
FIGURE 6. Pseudonereis brunnea sp. n. Holotype A–H (ECOSUR 0191); paratypes I–O (ECOSUR 0192). A, an...
FIGURE 7. Pseudonereis citrina sp. n. Holotype A–C, F–P (ECOSUR 0194); paratypes D (ECOSUR 0195) and...
FIGURE 8. Pseudonereis fauveli sp. n. Holotype A–M (USNM 1494007). A, anterior end, dorsal view. B, ...
FIGURE 10. Pseudonereis variegata (Grube & Kröyer in Grube, 1858). Topotype A–B, I–J (USNM 176578); ...
FIGURE 9. Pseudonereis gallapagensis Kinberg, 1865. Non-types A–B, E–K (USNM 24265), non-type C–D (U...
FIGURE 2. The midventral pharynx area in some nereidid genera. A, midventral area in Alitta succinea...
FIGURE 1. Proposal of division of pharyngeal midventral area. A, Kinberg's drawings of ventral phary...
FIGURE 1. Namalycastis occulta n. sp. A. Anterior end, dorsal view (insert: close-up of antennae). B...
FIGURE 3. Namalycastis borealis Glasby, 1999. A. Anterior end, dorsal view. B. Posterior end, dorsal...
FIGURE 3. Parapodial structures of Alitta acutifolia (Ehlers, 1901). Atokous specimen from Puntarena...
FIGURE 3. Nereis alacranensis n. sp. (Paratype). (A) Peristomium, ventral view. (B) Close-up of the ...
FIGURE 2. Nereis alacranensis n. sp. (A) Anterior end, dorsal view. (B) Anterior end, ventral view (...
FIGURE 3. Transversal distribution of paragnaths in the furrow and ridge regions. A, Alitta succinea...
FIGURE 4. Longitudinal distribution of paragnaths in the furrow and ridge regions. A, Neanthes cf. a...
FIGURE 5. Classification of some rectangular-base paragnaths. A, shield-shaped bars. B, crescent-sha...
FIGURE 6. Pseudonereis brunnea sp. n. Holotype A–H (ECOSUR 0191); paratypes I–O (ECOSUR 0192). A, an...
FIGURE 7. Pseudonereis citrina sp. n. Holotype A–C, F–P (ECOSUR 0194); paratypes D (ECOSUR 0195) and...
FIGURE 8. Pseudonereis fauveli sp. n. Holotype A–M (USNM 1494007). A, anterior end, dorsal view. B, ...
FIGURE 10. Pseudonereis variegata (Grube & Kröyer in Grube, 1858). Topotype A–B, I–J (USNM 176578); ...
FIGURE 9. Pseudonereis gallapagensis Kinberg, 1865. Non-types A–B, E–K (USNM 24265), non-type C–D (U...
FIGURE 2. The midventral pharynx area in some nereidid genera. A, midventral area in Alitta succinea...
FIGURE 1. Proposal of division of pharyngeal midventral area. A, Kinberg's drawings of ventral phary...
FIGURE 1. Namalycastis occulta n. sp. A. Anterior end, dorsal view (insert: close-up of antennae). B...
FIGURE 3. Namalycastis borealis Glasby, 1999. A. Anterior end, dorsal view. B. Posterior end, dorsal...
FIGURE 3. Parapodial structures of Alitta acutifolia (Ehlers, 1901). Atokous specimen from Puntarena...
FIGURE 3. Nereis alacranensis n. sp. (Paratype). (A) Peristomium, ventral view. (B) Close-up of the ...
FIGURE 2. Nereis alacranensis n. sp. (A) Anterior end, dorsal view. (B) Anterior end, ventral view (...