FIGURE 18 in Molecular and morphological systematics of Elysia Risso, 1818 (Heterobranchia: Sacoglossa) from the Caribbean region

FIGURE 18. Elysia papillosa, external morphology and egg mass. Live specimens were photographed upon field collection from Bocas del Toro, Panama (C–E, G–H) or Discovery Bay, Jamaica (F). A, Illustration accompanying original description (Verrill 1901: fig. 2), showing lateral undulations of the parapodial margin but no branching papillae; specimen is shown resting on stipe of H. incrassata. B, Illustration accompanying re-description of E. papillosa (Ev. Marcus & Er. Marcus 1967: figs. 22 and 23). C, Side view of isolate Epap_04Pan01 (8 mm length) showing brown parapodial margin with crown-like lateral undulations. D, Side view of isolate Epap_04Pan04 (5 mm). E, Top view of isolate Epap_04Pan08 (6 mm), showing elongated tail. F, Side view of juvenile LACM 178620 (3 mm). G–H, Dorsal surface of relaxed isolates Epap_04Pan07 (G) and Epap_04Pan01 (H), showing renopericardial complex, vessel network and greyish-white gametic vesicles. I (bottom right panel), Egg mass from Curaçao specimen showing irregular ribbon of white ECY twisting around uncleaved ova; field of view = 1.75 mm.