. Bulletin of the British Museum (Natural History). . Fig. 39 Littoridina gaudichaudi (Souleyet). Recent; Guayaquil. Ecuador. Type illustrations copied at original size from Soulcwt's (1852) tigs 31-33; magnifications approximate, a. dorsal view of shell with live animal extended, x ; b, ventral view of shell. X ; c, operculum, x 6. genera. The type species of Dyris and are vcr\ obviousls distinct. The rare bicarinate and uniearinate shells in the Pichana sample here identified as belonging to /). gracilis Conrad the type species ol Dyris do. however, approach the non-
. Bulletin of the British Museum (Natural History). . Fig. 39 Littoridina gaudichaudi (Souleyet). Recent; Guayaquil. Ecuador. Type illustrations copied at original size from Soulcwt's (1852) tigs 31-33; magnifications approximate, a. dorsal view of shell with live animal extended, x ; b, ventral view of shell. X ; c, operculum, x 6. genera. The type species of Dyris and are vcr\ obviousls distinct. The rare bicarinate and uniearinate shells in the Pichana sample here identified as belonging to /). gracilis Conrad the type species ol Dyris do. however, approach the non-carinate Liris in shell morphology. The spirally ribbed Dyris sernitubcrculaia sp. nov. |p lc)d) from 1 a lagua has weak and variable collabral folding, whilst Dyris tubcrcu- lata (de Grove 1938) from Iquitos has strong spiral and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
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