635 



latere antico brcvi, subacuminato^ lunula distinciu; latere postico 

 subquadrato, marginc dorsali clevato ; ligamcnto rctuso. 



Shell of a somewhat rounded oval form, white, with angular 

 markings, and a light greenish epidermis, concentrically striated ; 

 anterior side short, with a distinct lunule ; posterior side rather 

 squared, with the dorsal margin elevated, and the ligament nearly 

 hidden. 



The larger specimen figured is in Mr. Cuming's collection, from 

 St. Elena ; the smaller, which, although less ventricose and more 

 oval, resembles the younger portion of the other, is Mr. Hanley's. 



80. CYTHERiEA Belcheri (pi. cxxxvi. f. 188), 8oioerhy,jim. 



Cyth. testa subovali, fulva, concentrice sulcis subundulatis ru- 

 gata ; umbonibus elevatis, acuminatis ; latere postico subacumi- 

 nato, margine dorsali declivi; latere antico breviusculo, declivi, 

 lunula vix distincta. 



The surface of this little brownish shell is roughened by a kind 

 of concentric ripple-mark; the elevated umbones and sloping 

 sides give a somewhat triangular appearance to an otherwise 

 oval form. 



The only specimen we have seen was brought by Capt. Belcher, 

 and is in Mr. Hanley's possession. 



81. CYTHERiEA ANGULIFEllA (pi. CXXXVi. f. \%^),SoiOerh7J,jun. 



Cyth. testa oblongo-subovah, alba, macuKs angulatis sparsim 

 subradiatim picta, concentrice striata; latere postico elongate, 

 subacuminato ; latere antico bi-evi, lunula parva, distincta. 



Shell rather elongated, oval, whitish, with angular dark red- 

 dish-brown markings, striated concentrically ; hinder side rather 

 lengthened, acuminated, with the dorsal edge sloping ; front side 

 short, sloped, with small, distinct lunule. 



82. Cytheilea pannosa (pi. cxxxiii. f. 140, 141, 142), 

 Sowerhy, sen., Pro. Zool. Soc. 1835. p. 47. C. lutea, Koch, Phil. 

 Abbild. t. iii. f. 5. 



" Cyth. testa subovata, crassiuscula, Isevi, albicante, maculis 

 strigis lineisve angulatis luridis obscure picta; apicibus subpro- 

 minentibus." 



Shell rather oval, with straight falling sides, smooth, rather 

 tliick, whitish, variously ornamented with brown rays and hues 

 and angular markings ; lunule small and distinct. 



Coquimbo ; in sandy mud at low water. Ctiming. 



