PROM THK COAST OP BRITISH COLUMBIA. 12S 



/ MOPALIA WOSSNESSENSKYI, Middendorf. Associated with the two preceding species, but 

 apparently very much ruivr than either. 



IMPORCATA, Carpenter. (Sp.) Johustone Strait at station No. 10, one 

 small, living specimen, with the girdle partly overgrown by a hydroid. 



CKYITOCIUTON STELLERI, Miildonhrf. Discovery Passage, between Vancouver and Cortez 

 Islands, in about one fathom of water, one living specimen. Low tide, Johustone 

 Si rait, two living specimens; and on Thurlow Island, east end of Johnstone Strait, 

 four living shells. Low iide, Beaver Harbour, Vancouver Island, one living 

 specimen. One living specimen, also, was dredged in Queen Charlotte Sound at 

 station No. 15. 



Dr. Dawson states that this species is generally distributed on rocky ground 

 at and below low tide mark, but that it is nowhere very abundant. This and the 

 next-named species are cooked and eaten by Indians. 



KATHERINA TUNICATA, Soiverby. On rocks at low water all over the coast, and in some 

 places very abundant. 



LEI>TOCIIITON CANCELLATUS, Sowerby. Queen Charlotte Sound at station No. 12, eleven 

 small but living .specimens, four of which have been identified with this species 

 by Mr. "NV. H. Dall. Three specimens of a small, white Chiton, from station No. 14, 

 appear also to belong to this species. 



LEPTOCHITON PUNCTATUS. N. Sp. 



FIGS. 3 and 4.Lcptochiton j,iiiict<itu*. The figure on the left hand side represents the type 



specimen enlarged three diameters, and that on the right one of the central 



valves, enlarged eight diameters to shew the sculpture. 



Shell small, elongated, rather strongly elevated, back distinctly augulated ; 

 colour, pale cream or nearly white, but with a few small patches of reddish-brown 

 on the girdle, and a narrow and non-continuous series of variously interrupted 

 and broken up yellowish-brown spots upon the median line of all the valves but 

 the anterior one. Girdle squamose, the scales closely imbricating, much broader 

 than high, and distinctly striated when viewed under an achromatic microscope 

 with a half-inch objective. Mucro central and tolerably distinct where not worn 

 oil'; anterior valve marked with faint but rather numerous radiating striae and 



