141 



iSgo. Crassatella picta Paetel, Cat. Conch. Samm., III, p. 139. 



1896. Crassatella picta Casto de Elera, Cat. Sist. Filip., p. 786. 



1906. Crassatella picta MelviU & Standen, Proc. Zool. Soc. London, p. 814. 



1928. Crassatellites pictns Faustino, Summary Philippine Mar. Freshw. Moll. p. 47. 



Lamy ^) considers C. picta as a possible synonym of C. ziczac Reeve, but in view of the 

 more rostrate form and the much more regular and finer sculpture of C. Ziczac I am inclined 

 to regard it as distinct from C. picta. 



Distribution : C. picta was described from the Philippines and has since been recorded 

 from the Persian Gulf. 



In the "Siboga" collection the species is represented by a young shell dredged in the 

 Anchorage off North Ubian (St. 99). 



2. Crassatella radiata Sowerby. 



1825. Crassatella radiata Sowerby, Cat. Tankerville, p. 7, Appendix, p. 11, pi. I, fig. 2. 



1841. Crassatella radiata Reeve, Conch. Syst. I, p. 63, pi. XLIV, fig. i. 

 1843. Crassatella radiata Reeve, Conch. Icon., I, Crassatella, pi. III, fig. 12. 

 1843. Crassatella Radiata Hanley, Rec. Biv. Shells, p. 37. 



1845. Crassatella radiata Catlow & Reeve, Conch. Nomencl., p. 15. 



1857. Crassatella radiata Adams, H. & A., Gen. Rec. Moll., II, p. 486. 



1860. Crassatella radiata Reeve, Elem. Conch., II, p. 141. 



1878. Crassatella radiata Smith, Proc. Zool. Soc. London, p. 820. 



i88i. Crassatella radiata Loebbecke & Kobelt, in Martini-Chemn. Conch.-Cab. (N. F.), X(i«), 



Crassatella, p. 14, pi. VI, fig. 2. 

 1884. Crassatella radiata Grasset, Ind. Test. Viv., p. 282. 

 1890. Crassatella radiata Paetel, Cat. Conch. Samm., III, p. 139. 

 1892. Crassatella radiata Crosse & Fischer, Journ. Conchyliol., XL, p. "jÇ). 

 1902. Crassatella radiata Shopland, Proc. Malacol. Soc. London, V, p. 178. 

 1904. Crassatella radiata Smith, Ann. Mag. Nat. Hist., (7) XIV, p. 9. 

 1906. Crassatella radiata MelviU & Standen, Proc. Zool. Soc. London, p. 814. 

 1906. Crassatellites radia-ta Standen & Leicester, Ceylon Pearl Oyster Rept., V, p. 291. 

 1909. Crassatella radiata Lynge, D. Kgl. Dansk. Vidensk. Selsk. Skr. Nat.-Math., (7) V, p. 163. 

 191 I. Crassatella radiata Pelseneer, "Siboga" Lamellibranches (Anat.), p. 37. 

 1917. Crassatella radiata Lamy, Journ. Conchyliol., LXII, p. 225. 



The single young shell, which I assign to this species with some hésitation, was dredged 

 in the Western entrance of Samau Strait (St. 59). The sculpture of this shell is similar to that 

 of C. radiata^ but the young shell is much less rostrate. 



C. radiata is widely distributed in the Indian Océan, the Persian Gulf and the Red Sea. 



3. Crassatella ziczac Reeve. 



1842. Crassatella ziczac Reeve, Proc. Zool. Soc. London, p. 45. 



1843. Crassatella ziczac Reeve, Conch. Icon., I, Crassatella, pi. III, fig. 13. 

 1845. Crassatella ziczac Catlow & Reeve, Conch. Nomencl., p. 15. 



1847. Crassatella ziczac Nyst, Bull. Acad. Roy. Belgique, XIV, p. 128. 

 1857. Crassatella ziczac Adams, H. & A., Gen. Rec. Moll., II, p. 486. 

 1860. Crassatella ziczac, Elem. Conch., II, p. 141. 



i) Lamy, E. — Journ. Conchyliol., LXII, p. 229 (1917). 



