368 TESTACEOUS MOLLUSCA. 
behind; front dorsal edge straightish, scarcely sloping, angulated at 
the extremity; front ventral corner and hinder extremity rounded ; 
umbones prominent; lunule very small, broadly heart-shaped: imside 
white. +4...3. Indian Archipelago. As Reeve’s paper has priority, 
this shell, should it not prove (as some suspect) the young of . nitida, 
var. (!) must receive another appellation. 
Carpita corsis (t. 18, f. 6), Phil. Sic. 1, p. 55, t. 4, 7.19. Very 
small, oblique, subtrigonal, longer than broad, peaked dorsally, semi- 
oval ventrally, subequilateral, thick, more or less ventricose, ochra- 
ceous- yellow, with external flexuous streaks of reddish brown, 
densely striated throughout concentrically, the strie undulated by 
obsolete radiating sulci; ventral edge arcuated, crenated, rising in 
front; ligamental margin curving abruptly downwards; both ex- 
tremities rounded, the hinder peculiarly projecting below; umbones 
very prominent and oblique; beaks acute, much inclined: neither 
lunule nor lozenge. In one, valve a single oblique cardinal tooth, in 
the other two, of which one is compressed and elongated, the other 
straight and triangular. +. Mediterranean. 
CaRDITA ACULBATA (t. 18, f. 10), Phil. (as Cuama A. of Poli, t. 23, 
f. 23) 1, p. 54, t. 4, f. 18.—Reeve, I. Card. f. 17. Oval-trapeziform, 
extremely inequilateral, rounded in front, thickish, ventricose or 
tumid, white, sometimes tinted with pink or flesh-colour upon the 
radiating ribs, which cover the surface, are from 16 to 20 m number, 
square-cut, rather narrower than their unsculptured intervals, and 
closely armed with rather long vaulted scales; ventral edge sub- 
arcuated ; ligamental edge straightish or subconvex, slightly elevated ; 
ligament sunken; lunule cordate, impressed; beaks acute, inclined ; 
inside white. 3...%. Mediterranean. 
@anprra “Pred (t. 18) 4, V1), Reeve, 7. P1843) p. 191; ECan. 
f.8. Oblong, subtrapeziform, subtruncated behind; extremely ine- 
quilateral, thickish, ventricose, white with dark brown spots or 
blotches, that are more particularly conspicuous upon the ribs, which 
radiate over the entire surface. Ribs from 16 to 18, angular in the 
middle, the hinder ones squamosely nodiferous, the front ones with 
vaulted scales; their intervals radiatingly striated, and subdecussated. 
Ventral edge subarcuated in front, incurved behind ; ligamental edge 
straightish, rising, forming a very obtuse angle with the very oblique 
anterior margin. Lunule cordate, brown, impressed. Beaks very 
acute. Inside white, stained in front with dark brown or chocolate at 
the dorsal corner. 14. Philippines. 
CARDITA GUBERNACULUM (t. 18, f. 12), Reeve, Z. P. 1848, p. 191; 
I. Car. f.9. Oblong, dilated and rounded anteriorly, subtruncated 
behind (the beaks being almost terminal), thick, rather compressed 
(except the oblique umbonal elevation), rufous-brown, fading to white 
