CYPRJEA. COWRY. 35 



one at the juncture of each valve and two in 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 allms. White Canoe-shell. 



Dorset Cat. pi. l.f. 3 L'mu. Trans, vm. pi. 1. f. 4. 



Shell with eight valves, smooth, not ridged nor beaked 

 down the hack, pure white 5 the first valve notched on- the 

 hinder edge : length not a quarter of an inch. 



On shells and sea-weed : rare. v. v. 



7. Chiton crinitus. Hairy Canoe-shell. 

 Pennant, pi. 3.9. f. 1, and A. 1. magnified. 



Shell with seven valves, thickly clothed with short hairs : 

 length five lines. 



It is probable that this obscure species may, like the Ch. 

 septemvalvis of Montagu, be only an accidental variety of 

 Ch. marginatus or some other. The short hairs might, 

 upon examination, have been a Conferva, young Fucus, or 

 marine substance, such as is often seen on shells, particu- 

 larly Nerites. 



At Aberdeen and Sandwich. 



CYPR/EA. C01FRY. 



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 

 lips. 



]. Cyprcea Pediculus. Nun Cowry. Fig. 14, IS, 



Da Costa, pi. 2. f. b' 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' 

 appearance, some of them forked, or div'ded by interme- 

 diate horter ones': color white, yellowish, pir&, or cheo- 

 r-Mt biovrri: the inner-lip at th? more protruded end is 

 broad, with a depression which narrows and lc.-; ens as it 

 j:i trvvards the aiiddk- wt'the shi-'l. 



