95 



Crassatella bellula, a. Adams. C. testa ovato-trigonali, 

 sub(ecp.iilaterali, carneo-fulva, immaculata, transverse con- 

 centrice plicata ; plicis obtusis subconfertis regularibus, antice 

 undulatis, subevanidis (sub lente rugulosis) ; latere postico 

 rotundato, antico vix truncato ; umbonibus acutis parvis ap- 

 proxiiiiatis. 



Hab. New Zealand {Mr. Hart). Mus. Curaing. 



A beautiful pinkish yellow species, without any spots or markings, 

 with the pUcae on the fore part undulated and rugulose under the 

 lens. 



Crassatella truncata, A. Adams. C. testa ovata, cotn- 

 pressa, carnea, 2)alHdiori ad partem anticam, radiis angustis 

 inconspicuis ornata, incequilaterali, latere antico breviori et 

 rotundato, postico dilatato et truncato, linea elevata e umbo- 

 nibus ad marginem ventralem ; transversitn valde costata, 

 costis acutis subimbricatis. 

 Hab. China Sea, deep water (A. Adams). 



This is a small pale pink or flesh-coloured species, strongly rib- 

 bed, the ribs being sharp, prominent and imbricated ; the posterior 

 side is dilated and truncate, and the surface of the valves is marked 

 w th faint linear radiating lines. 



Crassatella compta, A. Adams. C. testa ovato-trigonali, 

 subcequilaterali, apicibiis antrorsum curvatis, rufescenti, trans- 

 verse concentrice plicata ; plicis validis, regularibus subdi- 

 stantibus ; latere antico angustiori, postico latiori rotundato, 

 interne purpurascente. 

 Hab. China Sea, deep water {A. Adams). 



This is a small red species, with prominent curved beaks, strongly 

 plicate transversely, and of a purplish pink colour in the interior of 

 the valves. 



Crassatella concinna, A. Adams. C. testa ovato-transversa 

 subcequilaterali, epidermide tenui fusca obtecta, utrinque ro- 

 tundata, concentrice plicata, plicis validis regularibus rufo- 

 fusco articidatis ; interstitiis creberrime longitudinaliter stria- 

 tis ; umbonibus acutis confertis. 

 Hab. China Sea, deep water {A. Adams). 



A small fuscous species, of an ovate form, rounded at both ends, 

 with the transverse plicae strongly produced and prettily articulated 

 with brownish red. 



