626 



sulcata, violascente-fulvo radiatim fasciatu; niargine dorsali alba, 

 fusco maculata ; lunula livida. 



Shell rather more depressed and elongated than the preceding, 

 not so elevated and angular at the posterior side, and having the 

 dorsal margins white marked with angular spots of brown, ra- 

 diated with brown, which becomes of a blackish-violet near the 

 ventral edge ; lunule well defined and of a strong purple tint. 



The shell agrees well with Lamarck's description, with the 

 exception of its being of a large size. 



St. Nicholas, Island of Zebu, Philippines. Cuming. 



49. Cyther^ea lilacina (pi. cxxx. f. 74), Lamarck, Aniin. 

 s. vert. Cyth. no. 15. 



Cyth. testa ovali, ventricosa, concentrice sulcata, fulva, obscure 

 radiata, postice subangulata ; margine dorsab livido ; lunula dis- 

 tincta, livida. 



Shell ventricose, oval, sulcated, brown, with obscure rays ; 

 hinder side rather angulated ; dorsal margin of a dull purplish 

 tint. 



Island of Corigidor ; Cuming. 



50. CYTHEKiEA obesa (pi. cxxxi. f. 83, 84), Sowerby, jwi. 



Cyth. testa ovali, lsevigata, ventricosa, crassa, obscure biradiata, 

 in radiis maculata ; lunula impressa. 



Shell oval, smooth, ventricose, thick, cream-coloured in the 

 middle, dull white near the margins, rayed obscurely with two 

 broad bands, upon which are reddish square spots. 



Locality unknown. We have seen only the one specimen 

 figured from Mr. Cuming's collection. 



51. CytheRjEA piperita (pi. cxxxvi. f. 175), Sowerby, jun. 



Cyth. testa lubrica, parva, ovali, subdepressa, pallide fulva, 

 griseo obscure radiata, maculis nigrescentibus parvis angulatis 

 sparsa; latere antico brevi, obscure sulcato, postico subacuminato ; 

 lunula distincta. 



Shell very shining, rather small, oval, pale fawn, with very 

 obscure rays of grey and sprinkled with sharp, black, angulated 

 spots ; anterior side short, with a few grooves ; posterior side 

 rather acuminated ; lunule distinct. 



Island of Burias, Philippines. Cumina. 



