CYTHEREA.— Plate X. 



or less profusely linearly waved, rayed aud stained 

 with violet-purple, concentrically plicately densely 

 ribbed throughout, lunule deep purple-rose. 



Hanlev, Pro. Zool. Soc. 184-i, p. 110. 

 Meretrix FhiUppiiim-um, Deshayes. 



Hab. Philippine Islands, Cuming. 



A closely ribbed species, elaborately painted with tine 

 zigzag linear waves of violet-purple, and sometimes stained 

 throughout with that colour. 



Species 48. (Mus. Cuming.) 



Cythebea fumea. Cijth. testa uibtngono-ovatd, com- 

 presm, fuineo-spadiced, ad nmbones lividd, deinde rufo- 

 fusco acute coiicentrice midiUatd, Icevigatd, nitente. 



The smoky Cytherea. Shell somewhat triangularly- 

 ovate, compressed, smoky fawn-colour, livid at the 

 umboes, then sharply concentrically waved with red- 

 brown, smooth, shining. 



Hab. ? 



This little shell appears to differ in form from any other 

 species, while it is characterized by a distinct style of 

 painting. 



Species 49. (Mus. Cuming.) 



Cytheuea gkata. Cyth. testd cordato-ovatd, ad itmbo- 

 nes subacuvilnatd, postici ublique productd, fahescente- 

 upadiced, concentrice percouspicui plicato-costatd, costis 

 sitbdistaiitibus, iuterstitm excavatis. 



The pleasing Cytherea. Shell cordately ovate, rather 

 acuminated at the umboes, obliquely produced pos- 

 teriorly, fidvous fawn-colour, concentrically very con- 

 spicuously plicately ribbed, ribs rather distant, with 

 the interstices excavated, 



Meretrix grata, Deshayes, Pro. Zool. Soc. 1853. 



Hab. China Sea. 



Remarkable on account of its general external resem- 

 blance to an Astniie. 



