(xd) 
iS) 
whose base is affixed to marine substances. Mouth 
almost inferior. 
Genus ANATIFA. 
Compressed at the sides, composed of five valves, which 
are contiguous and unequal, the lower lateral ones 
being the larger. 
A. Lauvis. Lam. 1.—Philippi. p. 252.—Brug. p. 
62.—Lepas AnaTIFERA. Lin. 1109.—D. p. 32.— 
Ch. f. 852.—Don. t. 7.— Dor. Cat. p. 26.t. 2. f.3. 
—Mont. p. 15.—Wood. G. C. t. 11.—Knorr. 2. t. 
30. f. 4. 5.—Turt. D. p. 71.—PENTELAsmis A. 
Leach.—Reeve. ¢. 12.—P. Lavis. Bl. t. 84. f. 3.— 
Compressed, polished, and bluish white ; the two lower 
valves large and somewhat triangular, longitudinally 
wrinkled and obsoletely striated radiatingly from the 
lower anterior angle: the two upper valves angulated 
on each side, top rounded, (these likewise are nearly 
smooth) ; dorsal valve long, slender, rounded, smooth 
down the middle and sulcated on each side; membrane 
and peduncle usually reddish. Length of shelly part, 
13...1. On ship's timber, common. 
A. Srriata. Lam. 4.—Philippi. p. 252.—Brug. 
p. 64.—Lepas ANSERIFERA? Lin. 1109.—D. p. 31. 
—ITist. t. 440. f. 283.—Ch. f. 856.—Don. t. 162. 
J. 2.—Mont. p. 17.—Turt. D. p. 72.—Much resem- 
