GINGLYMACONCHA. VENERIDZ. 299 
The animal with its tracheal tubes connected, at least at their 
base, and fringed at their extremities; the foot elongate, com- 
pressed, subconical. 
1. CapsA IRUS. 
Shells ovate, girded with erect membranaceous ridges, ante- 
riorly very obtuse and rough-ridged ; the ridges reflexed back- 
ward (or arched); epidermis brownish white. The shells white 
inside. Length one inch; height three-eighths of an inch. 
Donax Irus, Linn. Syst. Nat. xi. 1128, no. 111; Borlase, 
Corn. t. xxxviii. £. 23; Pult. Cat. Dorset: 32. t. xu. £.6 ; 
Donov. Brit. Shells, t. xxix. f. 2; Mont. Test. Brit. 108, 
573; M. & R. Trans. Linn. Soc. viii. 77; Poli, Test. Sic. 
ni. t.x. f. 1,4; t. xix. f. 25, 26; Flem. Edinb. Encycl. vii. 
94; Dill. Desc. Cat. 156; Turt. Conch. Dict. 43. 
Tellina Cornubiensis, Penn. Brit. Zool. iv. 89. 
Cuneus foliatus, Da Costa, Brit. Conch. t. xv. f. 6. 
Inhabits the western coasts of Devon and Cornwall, pertfo- 
rating marble rocks. 
2. CAPSA VIRGINEA. 
Shells subovate, sculptured with unequal concentric striz. 
Epidermis yellowish-white or pale brown, most generally varie- 
gated and marbled with rose or purple. Length two inches ; 
height one inch and two-eighths. 
Venus virginea, Lister, Conch. t. eccciil. f. 247 ; Linn. Syst. 
Nat. xii. 1136. no. 150; Schroeter Einl. ti. 151; Gmel. 
Syst. Nat. 3294; Chem. Conch. vu. t. xlu. f. 443 ; t. xbii. 
f. 457. a, b, c.; Brug. Encycl. Méthod. t. cclxxxiii. f. 2; 
Pult. Cat. Dorset. 34. t. xm. f. 1; Mont. Test. Brit. 129; 
M. & R. Trans. Linn. Soe. vii. 89 ; Flem. Edinb. Encycl. 
vil. ; Dill. Desc. Cat. 207; Turt. Conch. Dict. 246. 
Venus rhomboides, Penn. Brit. Zool. iv. 97. t. lv. f. dextra. 
Cuneus fasciatus, Da Costa, Brit. Conch. 204, 
Inhabits the British seas. 
