BIVALVE SHELLS. 



ter concentrice sulcata, snlcis tenuibus regularibns convexis, 

 antice posticeque multo tenuioribus ; umbonibus parvis acumi- 

 natis approximatis, apice purpureis ; kmula elongata, angusta, 

 elongato-cordata, ii-regulariter striato-lamellosa, profunde im- 

 pressa, in medio prominenti; sinu pallii angusto, apice acuto. 

 horizontali. 



Hab. Sinus Moretoni, Australia. ColL Cuminor. 



7. DOSINIA NITENS. 



D. testa suborbiculari, compressa, aliquando latiore quam alta, 

 concentrice inciso-sulcata, liris intermediis, appressis, area liga- 

 menti simplici, lunula cordata, alba, epidermide tenui, comea, 

 nitente induta. 



Artemis nitens, Reeve, Coiich. Icon. pl. 3. f. 12. 



Sow.jim. Thes. Conch. p. 656. no. 4. pl. 140. f. 11. 



Hab. ? 



8. DosiNiA GRATA, Dcsh. MSS. B.M. 



D. testa orbiculari, lenticulari, insequilaterali, tenui, fragili, in 

 medio convexiuscula, squalide alba, lamellis tenuibus regula- 

 ribus erectis concentrice cincta ; postice attenuatis ; umbonibus 

 minimis, brevibus, obliquis ; lunula ovato-acuminata, impressa, 

 in medio carinata ; area ligamenti angusta, vix depressa ; valvis 

 intus pailide flavis ; sinu pallii maximo, triangulari, profundo, 

 basi lato, apice obtuso. 



Hab. TeiTa Vandiemenensis. 



9. DOSINIA DUNKERI. B.M. 



D. testa subtrigono-orbiculari, undique regulariter concentrice 

 sulcata, area ligamenti simplici, lunula suboblongo-ovata, 

 parum impressa ; alba, nitente. 



Artemis Dunkeri, Phil. Abbild. Conch. Cyth. p. 4. no. 5. pl. 2. f. 9. 

 Reeve, Conch. Icon. pl. 6. f. 34. 



Adams et Reeve, Voy. Samarang, p. 78. pl. 21. f. 17. 

 Sow.jun. Thes. Conch. p. 657. no. 7- pl- 140. f. 5. 

 Adams, Panama Shells, p. 274. no. 448. 



Hab. America centralis, in litore Panamensi, Mazatlanico. 



10. DosiNiA CROCEA, Dcsh. MSS. B.M. 



D. testa orbiculari, lenticulari, gequilaterali, candida, concentrice 

 lamelloso-striata, lamellis numerosis, regularibus, versus urabo- 



