LEPAS. 
77 
13. Lepas conoides. Conic Acorn-shell. 
Donovan, pi. 30. f. 3 — Dorset Cat. pi. 2. f. 9. 
Shell conic, with the aperture very narrow, of six un¬ 
equal valves, surrounded with numerous nearly equidistant 
thin raised striae from the bottom to the top ; the tip of the 
valves rather flat and rounded: aperture narrow the lid of 
four valves: color purplish-white : diameter not half an 
inch. 
Western coasts, on shells and stones, v. v. 
r 14. Lepas Balanus. Common Acorn-shell. 
Lister, pi. 443. f. 2S6— Pennant, pi. 40. f. 1— Donovan , 
pi. 30. f. 1 — IVood, pi. 7- f- 3— Dorset Cat. pi. 2. f. 12. 
Shell of six raised valves, ruggedat their edges, more or 
less ribbed longitudinally, spreading at the base, of a grey¬ 
ish-brown or purplish color j the depressed triangles striate 
or rugged transversely: aperture moderately large: lid of 
four valves, all of them striate transversely; the shorter or 
front pair often smooth at the top, and serrate or tubercled 
by the stria* down the outer margin; the back pair longer, 
curving over the others, with a longitudinal groove down 
the middle of each : length nearly an inch; breadth at the 
base about half as much. 
Rocks, piles, and other substances, v. t\ 
, 15 . Lepas balanoides. Smooth Acorn-shell. 
Lister, pi. 444. f. 23 7—Pennant, pi. 40. f. 2 — Donovan , 
pi. 36. f. 2— Da Costa, pi. 17- f. 7—JVood, pi. 7. f. 1— 
Meet Cat. pi. 2. f. 7- 
Shell white, smooth, often deeply grooved at the base : 
valves six, mostly directed one way and ending in a beak, v 
divided by a longitudinal furrow : lid of four valves ; the : 
too upper ones slightly striate transversely; the others 
quite smooth: about half the size of the former, and often 
much spread at the base. 
Rocks, and other substances, v. v. 
t 16. Lepas elongata. Club-shaped Acorn-shell. 
Pennant, pi. 40. f. 4— Donovan, pi. 36. f. 3 —Dorset Cat, 
pU.f.6. 
Lepas clavata. IFood, pi. 7- f. 
a 3 
2 . 
Shell 
