Mr. E. A. Smith on Arctic Mollusca. 139 



fossil in Kane valley," from specimens colJected by Captain 

 Feilden during the expedition. These specimens were not 

 sent to the Museum. 



Trochus {Margarita) glauca^ Moller, 



Naturhist. Tidsskrift, 1842, p. 81. 



Margarita Harrisoni, Hancock, Ann. & Mag. Nat. Hist. 1846, xviii. 

 p. 325, pi. 5. figs. 4, 5. 



Hob. With the preceding species at Franklin-Pierce Bay. 



Trochus [Margarita) J sp., jun. 



Hah. Cape Fiasco {Feilden). 



This shell may be but a young specimen of Margarita 

 striata of Broderip and Sowerby ; but it differs from typical 

 examples in the spire being comparatively small in proportion 

 to the body -whorl, the base of which is almost destitute of 

 revolving strice ; the umbilicus is larger and not bordered by a 

 thickish ridge as is usually the case in this species. 



Chiton {Tonicia) marmoreus^ Fabricius, 



Fauna Groenlandica, p. 420 ; Gould, Invert. Mass. ed. 2, 1870, pp. 



261,262, fig. 524. 

 C. Icevigatus, Fleming, Reeve, Conch. Icon. iv. sp. 179. 

 C.fulminatus, Couthouy, Bost. Journ. Nat. Hist. ii. 1838, pi. 3. f. 19. 



Hah. Franklin-Pierce Bay, 15 fms., temperature 29°*50 

 {Hart and Feilden). 



Lepeta cwca, 0. F. Miiller. 



Patella cceca, 0. F. Miiller, Zool. Dan. Prodr. p. 237 ; MiddendorfF, 



Reise Sibirien, p. 183, pi. xvi. f. 6. 

 P. ce)-ea, Moller, Naturhist. Tidsskrift, 1842, p. 89 ; Reeve, Belcher's 



Voyage, p. 395, pi. 32. f. 1 a-c. 

 P. Candida, Couthouy, Bost. Joiu-n. Nat. Hist. ii. 1838, p. 86. 



Hah. Franklin-Pierce Bay, 15 fms. ; Cape Fraser, 30 fms. ; 

 and Richardson Bay, 70 fms. {H. W. Feilden). 



The animal of this species (var. concentrica) has been 

 briefly described by Middendorff, I. c. p. 186, and also by Dr. 

 Jeffreys in the 'Ann. & Mag. Nat. Hist.' 1877, March, 

 p. 231. 



Bulla {Cylichna) alha^ Brown, 



Volvaria alba, Brown, Illustrations Recent Conchol. ed. 2, pi. 19. f. 43, 

 44; Jeflfiieys, British Conch, iv. pi. 417, v. pi. 63. f . {Cylichna 

 alba). 



Bulla corticata. Beck, Moller, Naturhist. Tidsskrift, 1842, p. 79. 



B. triticea, Couthouy, Bost. Journ. Nat. Hist. 1838, ii. p. 88, pi. 2. f. 8. 



Hah. Discovery Bay, 5 fms. {Feilden). 



