729 



76. Venus lyra (pi. clxi. f. 192), Hanley, Sp. of Sheb, 

 Wood's Index, Suppl. pi. IG. f. 21. 



V. testa ovali, ventricosa, albida, purpureo vel fulvo nebulosim 

 variegata, costeilis iiumerosis obtusis ad latera laminatis et striis 

 elevatis intermediis ciiicta; latere postico loiigiusculo, subtrun- 

 cato ; margine dorsali lato, excavato, valvse sinistrge piano, d extras 

 lamiiiato ; lunula cordiformi, striata ; margine ventrali, intus cre- 

 nulato. 



Eather smaller and more oval than either of the preceding, and 

 slightly truncated at the back. The riblets are numerous, blunt- 

 edged in the middle, sharper aud laminated at the sides. In Mr. 

 Hanley's specimen, from the Gulf of Guinea, the surface is beau- 

 tifully clouded and spotted with purple. The dorsal area of the 

 right valve is laminated. The specimen figured is Mr. Cuming's, 

 from West Africa. 



77. Venus ceenulata (pi. clxi. f. 190), Chemnitz, f. 385. 

 Lamarck, Venus, no. 5. V. crenata, Gmel. 



V. testa cordiformi, subovali, ventricosa, postice acuminata, an- 

 tice rotundata, breviuscula, alba, fulvo nebulata, laminis concen- 

 tricis crebris elevatis medio obtusis ad latera laminatis crenulatis 

 fimbriatis subtus radiatim costelliferis cincta; latere postico sub- 

 truncato, subangulato; margine dorsali excavato, declivi, fusco- 

 maculato, valvse sinistrse piano, dextrse iaminato ; margine interno 

 crenulato; lunula oblonga, cordiformi, fusca, laminata. 



The strong rib-like crenulations visible on the underside of the 

 concentric lamina3 give the appearance of radiating riblets on the 

 body of the shell, \\\\\c\\ is, in fact, smooth between them. The 

 laminae are blunt in the middle, and sharp, and fringed at the 

 sides of the shell. 



West Indies. 



78. Venus cingulata (pi. clxi. f. 191), Lamarck, Anim. sans 

 vert. Venus, no. 17. V. pulicaria, Broderip, Pro. Zool. Soc. 1835, 

 p. 44. 



V. testa cordiformi, subovali, ventricosa, postice et antice sub- 

 acuminata, pallide fulva, fusco lineis angularibus picta, costeilis 

 concentricis medio subobsoletis ad latera laminatis subtus creni- 

 feris cincta; latere antico breviusculo, declivi; lunula fusca, lae- 

 vigata, magna; latere postico subacuminato ; margine dorsali 

 declivi, lato, excavato, fusco conspicue maculato; margine ven- 

 trali intus crenulato. 



