430 
MOLLUSCA. MACTRADtE. 
Kelx.ia, 
Gen. CXV. KELLI A. — Shell somewhat globular, equi- 
valve, closed ; hinge with two approximate teeth, and a re- 
mote lateral tooth in one valve, and a concave tooth and 
remote lateral one in the other. 
457. K. suhorbicularis, — Shell equilateral, gibbous. 
Mja sub. Mont. Test. Brit. 39. t. xxvi. f. vi. — Kellia sub. Turt. Biv. 
Brit. 57 . t, xi. f. 5, 6 — In cavities of limestone or the roots of sea- 
weeds. 
About half an inch in diameter ; cuticle thin, greenish, prismatic, faintly 
striated ; valves convex, the ventral margin nearly straight, the ends round- 
ed ; beaks not very prominent, slightly turned to one side. Montagu con- 
sidered it to be a borer^ in limestone, in some situations, but apparently with- 
out sufficient evidence. 
468. K. rubra. — Shell slightly transverse, inequilateral. 
Cardium Iseve apice minuto. Walk. Test. Min. 24. t. hi. f. 86. — Cardium 
rubrum, Mont. Test. Brit. 83. t. xxvii. f. 4 — Kellia rubra, Turt. Biv. 
Brit. 57 . t. xi. f. 7, 6. — Crevices of marine rocks and roots of sea-weeds 
towards low water-mark. 
About the tenth of an inch in diameter, smooth, or appearing as if very 
finely shagreened, of an uniform rich crimson, often paler, or covered with a 
rough green or brown coat ; inside glossy purple ; beaks near one end, pro- 
minent, under which the margin slopes in an incurved manner towards the 
smaller end ; teeth minute, as in the last. — The preceding description is that 
of Dr Turton, to which he has added, that, in the month of June, he has 
found the old shells containing about twelve perfectly formed young ones. 
I have found a shell in abundance, in Zetland, at the roots of sea-weeds to- 
wards low water mark, agreeing with the preceding, except in the cuticle 
being thin and of a pale greenish colour, with prismatic hues. 
Gen. CXVI. LORIPES. — I^enticular, teeth obsolete, behind 
which is a linear marginal groove for the ligament ; sy- 
phons short, united, the foot long and cylindrical. 
459 . L. lacteus. — Orbicular, nearly equilateral, slightly trun- 
cated retrally. 
Tellina lactea, Linn. Syst. i. 1119. Mont. Test. Brit. 10. t. ii. f. 4. — 
Lucina lactea, Turt. Biv. Brit. 112. t. vii. f. 4, 5. — English shores. 
Diameter about three quarters of an inch ; whitish ; irregularly striated 
transversely, beaks prominent, slightly inclining, before which is a small lu- 
nule ; a plain tooth in one valve closing between two plain ones in the 
other. 
460. L. leucoma. — Shell with regular transverse striae. 
Lucina leucoma, Turt. Biv. Brit. 113. t. vii. f. 8.— South shores of Eng- 
land. 
Resembles greatly the last, but is distinguished, according to Dr Turton, 
by a greater convexity, by more regular, crowded, raised, transverse striae, 
which are crossed by extremely fine longitudinal lines ; the last, however, 
not always visible. 
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