CYPILEA. COWRY. 35 
one at the juncture of each valve and two hi.the front, 
making eighteen in all: color brown or dark' grey, often, 
mottled: length more than half an inch. ' * 
On shells and under stones, v. v. 
! 6. Chiton alb us. White Canoe-shell. 
Dorset Cat. pi. l.f. 3— Linn . Trans. viii. pi. 1. f. 4. 
Shell with eight valves, smooth, not ridged nor beaked 
down the back, pure white; the first valve notched on the- 
hinder edge: length not a quarter of an inch. 
On shells and sea-weed : rare, v . v. 
/. Chiton crinitus. Hairy Canoe-shell. 
Pennant f pi. 39. f. 1, and A. J. magnified. 
Shell with seven valves, thickly clothed with short hairs :, 
length five lines. 
It is probable that this obscure species-may, like theCh. 
septemvalvis of Montagu, be only an accidental variety of 
Ch. marginatus or some other. The short hairs might;' 
upon examination, have been a Conferva, youngVF ilchs, or 
marine substance, such as is often seen.on shells, partieu-r 
larly Xerites. 
At Aberdeen and Sandwich. • . * 
•; * • - / * ~ v -• ; hi ' * 
CYPR3SA. COWRY. . 
Shell with a single valve, oval, involute, obtuse 
at the ends: aperture very narrow, reaching the 
whole length of the shell, toothed along both the 
lip s * ~ ' 
t I; Cyprasa Pediculus. 'Nun Cowry. Fig. 14, 15* 
Da Costa, pi. 2. f. (i— Donovan, pi. 43. \ 
Shell polished, tumid, without the.longitudinal groove 
on the back, surrounded with numerous transverse ribs* 
which terminate within the' lips and give them a'notched 
sppoarance, some ofthem forked,* or divided by interme-* 
dinteshorterones: color white, yellowish, pink, or'che?- 
nutbrown: the inner-lip at the more protruded end'll 
broad, with a depression which narrows and lessens as it* 
gets towards the middle of the shell. 
In 
