306 CATALOGUE 'OF THE SPECIES OK 



Ch. lupinaria (Venus lupinaria, Lesson Cent, t. V. Dione /3, 

 Broderip.) 



Ch. rudis (Cyth. rudis, Lam., Poli. Test., t. 20, f. 15-16.) 



Chione maculata {Venus maculata). 



Chione squalida (Cytherea squalida, Sow.) California. 



Chione Lamarckii. — Shell oblong, subeordate, rather thick, solid, 

 smooth ; pale brown, with unequal white rays. Hinder slope punc- 

 tulate. Lunule lanceolate, purple-brown ; inside white, edge pur- 

 plish. Length 2^ inches. 



Chione apicalis. — Shell oblong, subeordate, rather thick, solid, 

 smooth, yellowish-white, with a few arrow-shaped pale-brown spots 

 above. Umbones red-brown ; inside white. 



Chione fioridella. — Sbell ovate, subeordate, rather thin, smooth, 

 polished, with some deep cross grooves on the upper part of the 

 hinder slope. Pale brown, with darker, narrow, articulated rays ; 

 inside pale orange, purplish-edged. Front hinge tooth compressed, 

 and close with the others. 



Var. — Whitish, with an anterior and posterior very broad darker 

 ray. 



Inhabits Africa, the Coast of Guinea. 



Chione striata. — Shell ovate, cordate, solid, thick, tumid, rude, 

 concentrically striated. Yellow or orange, purplish behind. Hinge 

 margin rather thick. Lunule ovate, lanceolate, yellow ; inside white, 

 purple behind. Inhabits New Holland ? 



Chione virgo. — Shell subovate, cordate, tumid, rather thick, 

 roughish, concentrically striated. White, apices of umbones rosey. 

 Hinge margin moderate ; inside pure white. 



Chione purpurascens. — Shell roundish, subeordate, rather thick, 

 solid, smooth ; front and upper part of hinder sides with rather deep 

 concentric grooves. Purplish ; umbones paler. Hinder slope punc- 

 tulate ; inside white. 



Var. — Paler, smoother, umbones concentrically striated. White, 

 with zig-zag brown lines. Lunule purple. The hinder hinge 

 tooth of the older specimens are flat and very rugose. Intermediate 

 between Cytherea and Chione. 



Chione badia.— Shell ovate, subeordate, rather compressed, po- 

 lished, yellow brown, apex purplish, regularly concentrically 

 grooved. The middle of the lower part smooth, grooveless. — May 

 be the young of Chione purpurascens. 



