CONCHYLIA— D/TT/rR^. 28. 115 



Dorset Catal. p. 30, tab. 5, fig. 8. 



Wood, Conch, p. 187- 



Dillwyn, Descript. Catal. p. 99. 



Turton, Conch Diet. p. 176. 

 Pectunculus tenuis. Lister, Conch, tab. 297, fig. 134. 

 Mus. nost. Western coasts, and Ireland. 



Shell an inch or rather more in diameter, convex, very obscurely 

 striate transversely in an irregular manner, a little oblic[ue and irre- 

 gular round the circumference, yellowish-white or pale horn-color 

 and transparent : beaks not quite central, rather prominent ; inside 

 white but not glossy, except the area round the margin which is 

 faintly striate longitudinally : hinge with two teeth in each valve, 

 one cloven, the other diverging ; the lateral cavity narrow and 

 nearly straight. 



LuciNA testa convexd transversim striolatd, margine undato, valid ^xiAaxz 



altera tridentatd, alterd bidentatd. ^■ 



Shell convex slightly striate transversely, undulate in the circum- 

 ference, with three teeth in one valve and two in the other. 

 Venus undata. Pennant, Brit. Zool. p. 209, tab. 58, flg. 3. 



Turton, Linn. Syst. iv. 233. 



Linn. Trans, vi. p. 169, tab. 17. fig IT and 18. 



Montagu, Test. Brit. p. 117. 



Donovan, British Shells, iv. tab. 121. 



Linn. Trans, viii. p. 86. 



Turton, British Fauna, p. 157. 



Dillwyn, Descript. Catal. p. 197. 



Turton, Conch. Diet. p. 241, fig. 54. 

 Mus. nost. Common on most sandy shores. 



q2 



