(i) 
a 
at the top for the passage of the cirrh. To this 
club-shaped integument are attached five small 
narrow distant testaceous valves two situated at the 
sides of the aperture, one dorsal, the rest terminal. 
C. Virtata. Leach.—Lam. 1.—Reeve. t. 15.— 
Lepas V. Wood. G. C. p. 69. €. 12. f. 2. 3.—D. p. 
33.—Lepas MemBranacka. lin. T. 11. ¢.12. fi 2. 
—Turt. D. p.73.—Wood. G. C. p. 20.—Somewhat 
oblong, gradually sloping into the stalk, obliquely trun- 
cate at top, fleshy, flattish, with five small white linear 
testaceous valves, the two upper rather oblique, the two 
lower with a strong hook-like process in the middle of 
each projecting inwardly aud curving a little upwards 
to the point; the back valve gibbous in the middle, 
extending above to the termination of the upper pair, 
where they meet and form a projecting angle and reach- 
ing below nearly to the commencement of the stalk 
which is as long as the body; pale blue with three 
broad dark blue stripes on each side. 1...3. Smaller 
variety. Uniform dark horn-colored, the stalk not 
sloping. Poole and Devon, on planks of wrecked 
vessels. 
Genus OTION. 
Pedunculated, entirely enveloped in a membranaceous 
integument, which is ventricose above and sur- 
mounted by two horn-like truncated tubes turning 
