MOLLUSCOUS ANIMALS. 
15] 
Venus Gnidia, t. 41. /. 3. Broderip and Soivei-by in Zool. Journ. iv. p. 364. 
Inhabits the Pacific Ocean. Dredged at St. Bias. 
Venus tricolor, t. 41: / 7. Sowerby, Zool. Proc. 1835. p. 41. 
Inhabits sandy mud at Puerto Portrero on the coast of Central America. 
Venus neglecta, t. 41./. 8. 
Shell lenticular, nearly circular, strongly radiately striated, with elevated concentric ridges ; anterior 
side shorter than the posterior, which is rather sloped ; dorsal margins, with an elevated ridge at which the 
concentric ridges begin, within which there is a rather broad, sloping, nearly smooth area: concentric ridges 
crenulated beneath : anterior and basal margins within finely denticulated, the denticulations becoming smaller 
from back to front ; inside white varied with purple, more particularly at the posterior extremity; outside 
brownish white with angular dark brown marks and spots. 
Inhabits sandy mud on the coast of Central America. I have long been acquainted with this species, its 
near general resemblance to V. cancellata, Lam. has probably caused it to be overlooked. 
Venus decorata, t. 41. /. 9. Broderip and Sowerby in Zool. Journ. v. p. 49. 
tab. sup. 40. fiy. 3. 
The representation here given is taken from the only specimen known at the time, which was brought 
home by the Blossom. I have since seen several others, which are more highly coloured, being of a brownish 
rose colour with darker speckling : its locality is, however, still unknown to me. 
Cytherea rosea, t. 43./. 7. Broderip and Sowerby, Zool. Journ. \v. p>. 364. 
Found abundantly at St. Bias. 
Cy therea planulata, t. 43./. 6. Broderip and Sowerby, Zool. Journ. v. p. 48. 
Found abundantly near Mazatlan. 
Cytherea biradiata, t. 43. f. 5. 
Shell ovate-heartshaped, turgid, smooth, polished, fuscous, generally with two, more or less distinct, 
darker coloured diverging rays ; umbones paler, more or less spotted and speckled with dark brown : anterior 
end short, rounded ; posterior more elongated, and more pointed ; posterior dorsal margin sloping ; inside 
purplish livid. 
Found abundantly at St. Bias and Mazatlan. 
This species nearly resembles Cytherea maculata, Lam. a shell which abounds on the Atlantic shores of 
South America. 
PULLASTRA NEBULOSA, t. 43./. 8. 
Venus nebulosa. Lam. Hist. nat. des anim. sans vert. V. p. 602. — Chemn. 
Conch. Kab. VI. t. 34./. 359—361. 
Lamarck states that this is found at Tranquebar. It is very closely related to V. opima, Lam. and is 
perhaps merely a variety of that species. 
