WHiTEAVEe J DEVONIAN FOSSILS OF MANITOBA, ETC. 345 



Red Deer River, J. B. Tyrrell and D. B. Dowling, l.ssy ; a few specimens, 

 some of them mere fragments, from each of these localities. 



It is possible, as elsewhere stated (op. cit.) that this species may be a 

 Potrrioci'ntu rather than a Gonip/iocfnis. 



(S.) Cyrtocekas occidentale. 



Cyrloecms occidcntah, White-Aws. 181)1. Traiih. Rc.yal Snr. C^anada, vol. VIII, Sect. 

 4, p. 103, pi. vii, figy. 5, 5a, and G. 



Lake Winnipegosis, at Snake Island (one specimen), and around 

 Dawson Bay, at Whiteaves Point (four specimens), .'it the mouth of 8teep 

 Rock River (pieces of the siphuncle only), and at the mouth of the Red 

 Deer River (the largest specimen figured in the Trans. Royal 8ijc. Canada) ; 

 J. B. Tyrrell and D. B. Dowling, 1889. 



(S.) Homalocehas planatum. 



ffomaloceras planatntii, Whhea,\rf: 1891. Tran.s. Royal Soc. Canada, vol. VIII, Sect 

 4, p. 10.5, pi. viii, figs. 2 and 2a-b. 



Dawson Bay, Lake Winnipegosis, at ^\'hiteaves Point, J. B. Tyrrell, 

 1880 : one imperfect but characteristic specimen and three fragments. 



In the elaboration of the generic and specific characters of this species 

 and the next, the writer was materially assisted by Mr. L. M. Lambe. 



(S.) TeTRAGONOCEBAS fJRACILE. 



Tttntrtuiwccras r/raciJr, Whiteaves. ISlll. Trans. Royal Soc. Canada, vol. VIII, Sect. 

 4, p. lOf), pi, viii, figs. 2, 2a-lD. 



Western shore of Dawson Bay, Lake Winnipegosis, at an exposure 

 about two miles west of Salt Point and four miles north-east of the mouth 

 of 8teep Rock River, J. B. Tyrrell, 18S!) : "one .specimen imbedded in a 

 piece of rock which has been so broken as to show nearly the whole of the 

 characters of the interior of the septate portion of the shell, as well as the 

 general shape of the latter.'' 



(S.) Gyroceras Canadensb. 



Gyrociras Caniidense, Whiteaves. l.M!)l. Trans. Royal Soc. Canada, vol. VIII, Sect. 4, 

 p. 106, pi. ix, figs, la-c, and 2. 



Dawson Bay, Lake Winnipegosis, on a small island about half-way 

 between Whiteaves and .Salt Points, D. P.. Dowling, 1888 : one imjjerfeot 

 specimen. Dawson Bay, at Whiteav<« Point (five specimens), and at a 

 point three miles north of the mouth of I'.ell River (one specimen) ; J. B. 

 Tyrrell, 1889. 



