721 



52. Venus subrugosa (pi. civ. f. 63), Soioerhj, Genera of 

 Shells, Vemis, f. 2. V. subsulcata, Menke (Jay). 



V. testa subtrigona, crassa, fulvo-grisescente, fusco quadrira- 

 diata, ad umbones et ad latera radiatim striata, concentrice valide 

 rugis subundatis costellata ; latere postico longiusculo, subrostra- 

 to, margine dorsali planulatim excavato ; latere antico rotundato ; 

 lunula magna, Igevigata; dentibus cardinalibus magnis. 



Broader, larger, and less oblique than V. macrodon, with very 

 large ribs at the upper part of the shell, which is rayed with brown 

 bands. 



West Columbia. Cuming. 



53. Venus Kellettii (pi. civ. f. 64), Kinds, Voyage of the 

 Sulphur, Mollusca, p. 65. pi. 19. f. 5. 



V. " testa oblique cordata, solida, laevigata, castanea, transversim 

 sulcata, seu potius lineis impressis excavata, intervalKs latitudine 

 variabiUbus, ad extremitates laminis munita : lunula elongate cor- 

 date." 



An obliquely cordate shell, on the same principle of construc- 

 tion as V. PapJda, yet very different. The concentric ribs are 

 broad and flat, crossed near the umboes with impressed strige, and 

 terminated at each extremity by laminar lobes, the posterior ones 

 not quite reaching the hinder margin. One broad radiating band 

 of a light chestnut-colour, with darker rays, covers all but the 

 sides of this remarkable and beautiful shell. 



Island of Guibo, west coast of Veraguas. 



54. Venus Peruviana (pi. civ. f. 66), Sowerby, Pro. Zool. 

 Soc.1835, p. 22. 



" V. testa obovata, crassa, concentrice costata ; costis crassius- 

 culis, sublamellosis, antice reflexis, medio reflexis, fulvo-articula- 

 tis, postice deflexis, tenuioribus ; latere postico quam anticum du- 

 plo longiore, marginibus depressis, planatis ; margine ventrali ro- 

 tundato, intus Isevi/' 



Oval, concentrically ribbed, with the ribs tliick, prominent, la- 

 minated, reflected in the middle and till near the back of the shell, 

 there turned downwards with a kind of fold and flattened. In 

 front also they are a httle flattened, and turned outwards. The 

 young shell resembles V. Cijpria. 



Ancon, Peru ; figured from a very fine specimen in Mr. Cum- 

 ing's collection. 



