634 



trice striata; latere postico acuminato, subangulato; latere au- 

 tico breviusculo, subinflato ; lunula magna, clistincta. 



Like a miniature of C. trigona, but flatter, more acuminated 

 behind, and more finely striated. 



Locality unknown. Mies. Sowerhy. 



76. Cyther^a Tellinoidea (pl.cxxxvi. f.l91),<So2^e/'^y,j?'w;i. 



Cyth. testa ovali, compressa, Isevi, subalbida; latere postico 

 subelongato, acuminato, margine dorsali declivi, subangulato, 

 margiue ventrali postice subemarginato ; latere antico brevi, rotun- 

 dato, lunula angustata, distincta, coniplauata. 



Shell oval, flat, smooth, nearly white ; posterior side long, acu- 

 minated, lobed, with the dorsal margin sloping; anterior side 

 short, rounded, with the lunule narrow. Hat, and distinct. One 

 specimen of this shell, which has the appearance of a Tellina, is 

 in the collection of Mr. Hanley. 



77. CytherjEA Manilla (pi. cxxxvi. f. 180, \'&\),Sowerh7/, 

 jun. 



Cyth. testa ovali-subtrigona, ventricosa, alba, concentrice striata, 

 postice acuminata, sublobata, antice breviuscula ; lunula lata, 

 subcomplanata, distincta. 



Shell of an oval or subtrigoual form, ventricose, white, con- 

 centrically striated ; the hinder side lobed and acuminated, the 

 anterior side shorter ; the lunule broad, flatfish, distinct. 



Mr. Cuming^s specimens are from Manilla. 



78. Cyther^a indecora (pi. cxxxvi. f. 179), FUlippi, Ab- 

 bUd. Cyth. t. 9. f. 7. 



" Cyth. testa cordato-trigona, satis tumida,utrinque subaugulata, 

 exquisite transversim sulcato-strigata, alba, epidermide lutescente 

 obducta; lunula magna, cordata, linea impressa circumscripta, 

 cseterum baud distincta; area nulla; ligamento subocculto." 

 " Patria, Mergui ; legit Th. Philippi.'' 



The shell which we have figured is in the collection of Mr. 

 Sowerby, sen. Although scarcely trigonal enough, it agrees on 

 the whole with the above description. 



79. Cyther^a fluctuata (pi. cxxxvi. f. 185, 186), Sowerby, 



jun. 



Cyth. testa ovali, subventricosa, alba, epidermide subviridi iu- 

 duta, lincis rubescentibus angulatim fluctuata, concentrice striata ; 



