94 KOYAL SOCIETY OF CANADA 



TEACHYDEEMON, Ciirpeiiter. 



329. Trachydekmox dkntfkns, 'iouUI, sj). 



Chitoti (lenficus, Gould. Proc. Kost. 8oc. Nat. Hist., vol, ii., i). 14ii (July. 1M46) ; and 

 U.S. E.\pl. p:xped., MoUusca, p. :j21, ti^s. 4;«-4:«l) (1S.52). 

 ~Trach!/(7('r)iio)i p.seuclodentim.s. Cpr. 



I have a few specimens of this species found on rocks between tides 

 near Victoria, The shell does not seem to liave been recognized by Mr, 

 Whiteaves in Dr. Dawson's collections. 



330. Trachydermon plectens, (-arpenter. 



Rept. Brit. Assoc, lS(tt, p. (i49 (August, 1864> ; and Proc. Acad. Nat. Sci. Phila., 



1865, p. 60. 



A pretty little species collected here by both Lord and Kennerley 

 (teste Carpenter) , I have taken it not rarelj-, by dredging, at Victoria 

 and Departure Bay; but strangely enough Di-. Dawson did not obtain 

 it during his northern trips, nor has Dr. !Newcombe found it in any of 

 the localities in which he has collected. 



TONICELLA. Carpenter. 



331. TONICELLA LINEATA, Wood. Sp. 



Chifo)t linentiin. Wood, Cren. Couch., p. 15, pi. 2, figs. 4 (1H15). 



Very common between tides on all our coasts. It is a very variable 

 species but always readily separable from its allies. A pretty variety, of 

 which I took two or three specimens at Nanaimo last year, is, when alive, 

 wholly bright blue without aii}^ trace of the characteristic lineation. Dr. 

 Pilsbry calls this species '' One of the handsomest north Pacific Chitons," 

 and so it undoubtedly is. 



332. ToNicELLA suBMAR.MOKEA, Middendortf, sp. 



Chiton subiii(ir)itor('i(s, Midd., Bull. Acad. Sci. St. Peters., vol. iv.. no. S (1846); and 

 Mai. Russ., pt. 1. p. !)8, no. 4 (1S47). 



Of this species only a few specimens have so far been taken at Vic- 

 toria, Departure Bay and Salt Spring Island ((J, W. T.) and Galiano 

 Island (Newcombe). 



Carpenter placed T. submarmorea on our A'ancouver list on the 

 strength of specimens collected by Swan, but added a note "perhaps = 

 lineata without the lines." It is however easily distinguished from 

 lineata, as Pilsbry remarks, by its microscopic granulations, and from 

 the following species, T. marmorea. by its different colour pattern. 



