PART II. MACBOTRACHIA. VENERINvE. 37# 



CVTHEREA Lam. Animal with the siphons entirely 

 united ; foot large, tongue-shaped ; shell generally 

 smooth and glossy ; cardinal teeth 4 ; lateral tooth -}, 

 placed on the anterior side, (^/zgr/120. d, g.) 

 C. Chione. Poli. ii. pi. 20. f. 1 . maculata. En. Meth. 265. f. 4. 



DONAX Linn. Shell cuneate, or wedge-shaped, the an- 

 terior side very short and truncate ; teeth variable in 

 the sub-genera, (fig. 120. /a.) 



D. scorotum. En. Meth. 260. f. 2. 



CAPSA Lam. Shell transverse, nearly equilateral ; car- 

 dinal teeth \ ; lateral teeth | ; ligament external. 

 C. Braziliensis. Sow. Gen. f. ]. (fig. 120. /.) 



CARDISSA Sw. Shell heart-shaped, excessively com- 

 pressed ; the anterior side truncate, and often concave ; 

 the posterior rounded. 



spinosa Sw. En. Meth. 293. f. 3. 



CARDIUM Linn. Shell ventricose, cordate, or longitudi- 

 nally oval; umbones prominent; cardinal teeth -|; 

 lateral teeth |, remote. 



Cardiumljirm. Shell ventricose, equilateral; cordate, with 

 costated ribs ; often armed with spines. Typical, 

 costatum. Wood, General Conch, edula. Wood, Conch. 



i. pi. 56. f. 1 . pi. 55. f. 4. 



tuberculatum, Sow. G. f. 3. 



Lfsvicardium Sw. Shell longitudinally oval, inequila- 

 teral, the surface neither ribbed nor spired. Sub- 

 typical. 

 Europeum. Wood, Con. pi. flavum. Wood, pi. 54. f. 2. 



54. f. 1. oblongum. Ib. 55. f. 1. 



citrinum. Ib. 54. f. 3. ^Eolicum. Ib. 57. f. 1. 



Hemicardium Sw. Half heart-shaped ; the anterior side 

 abruptly truncated, and very short: representing 

 Donax, &c. 

 H.unedo. W T ood, Conch, pi. fragrum. Wood, Conch, pi. 



58. f. 3. 58. f. 1, 2. 



retusum. Ib. 58. f. 4, 5. laevum Sw. Ib. 57. f. 7, 8. 

 BBS 



