182 Mr. Montacu’s Account of some new and rare 
but I am confident, that it is quite impossible it should be the 
shell which Linnzus has so strongly stamped the character of by 
these words: apertura clausa valvulis testaceis octo. SER, 
LEPAS MEMBRANACEA. 
s Tan. XII. Fig. 2. 
Test. Brit. Sup. p. 164. 
It will be observed in Testacea Britannica that this species was 
described from a dried specimen, the only one that had been pro- 
cured ; but having since been so fortunate as to obtain a great 
many fresh, and some not dispossessed of vitality ; and conceiv- 
ing that a correct figure of it might be highly acceptable to the 
scientific, it has been delineated with that view. It is however 
essential that a little alteration should be made in the original 
description, since in the dried specimen of this very membranous 
species, not only the colour was vanished, but also by contrac- 
tion the sides had become unnaturally wrinkled. 
Sub-parallelopipedal, sub-compressed, fleshy, with five small 
valves: peduncle cylindric, as long as the body ; colour pale 
blue, with three broad stripes of dark blue on each side, running 
from the summit to the base of the peduncle: the plumes of the 
animal's tentacula purplish-blue : on each side of the lower part 
of the aperture is a triangular valve; on the top are two small 
linear valves ; and a similar dorsal valve is on the upper part of 
the back. Length of the largest specimen, including the pe- 
duncle, nearly three inches ; breadth above half an inch. 
. Many of this elegant species of Lepas were discovered on the 
bottom of a transport stranded on the coast of South Devon in 
January 1809; she had been to the north of Europe, and was 
last from Portugal. 
z ‘ BULLA. 
