GASTEOCH^NA. (Thes. pi. 470.) 



Fig. 



1. cuNEiFORMis, sp. 5, Spenjler, Guerin, Mag. Nat. Hist. 



— Isl. Zebu, Philippines, 



2. DUBiA, sp. 1, Pennant. G. modiolina, Lam. — British 



and Mediterranean coasts. 



3. PLiCATiLis, sp. 28, Deshayes, Proc. Zool. Soc. 1854. — 



Isl. Zebu. 



4. DiFFiciLis, sp. 2, Deshayes, MS. Cum. Coll. — Isl. St. 



Thomas. 



5. APEiiTissiMA, sp. 3, Deshayes, Proc. Zool. Soc. 1854. — 



Hab. 



6. SPATHULATA, sp. 18, Deshayes, Proc. Zool. Soc. 1854. — 



Isl. Bohol. 



7. DENTicuLATA, sp. 13, Deshaycs, Proc. Zool. Soc. 1856. — 



W. Columbia. 



8. MYTiLOiDES, sp. 29, Lamavck, An. s. vert. —Hab. — ? 



9. OVATA, sp. 12, Sowerby, Proc. Zool. Soc. 1834. — 



Panama. 



10. Eetzii, sp. 27, Deshayes, Conch. Isl. Keunion. — 



Bourbon. 



11. EOSTRATA, sp. 26, SpengUr, Guerin, Mag. Nat. — Isl. St. 



Thomas. 



12. GiGANTEA, sp. 4, Deshaycs, MS. Cum. Coll. — Hab. — ? 



13. TRUNCATA, sp. 23, Sowevby, Proc. Zool. Soc. 1834. — Bay 



of Panama. 



14. cucuLLATA, sp. 22, Dcshayes, Proc. Zool. Soc. 1856. — 



W. Indies 



I I 



