202 



obliquely transverse ridges on the flattened sides of the test bears a row 

 of minute tubercles, and the narrow linear depressions or grooves between 

 the tuberculose ridges are marked with fine, longitudinal and parallel 

 raised lines. It seenis highly probable that G. formosa is synonymous 

 with C. asperata. 



CEPHALOPODA. 



Endoceeas annulatum, Hal]. Var. 



Endoreras annulatum,'H.a,\l. Var. Whiteaves. 1891 Trans. Royal Soc. Canada, vol. IX., 



sect. 4, p. 77, pi. 5, figs, 1 and 1 a. 



Between the second and third rapids of the Nelson River, Eeewatin, 

 Dr. R. Bell, 1879 : a cast of the interior of the septate portion of the 

 i&ell and two fragments. The most perfect of these specimens, the one 

 figured in the Transactions of the Royal Society of Canada, differs from 

 the type and only known specimen of S. annulatum, as described and 

 figured by Hall (which is also a septate cast), in the much more oblique 

 disposition of its annular ridges, each of which passes obliquely over 

 three of the septa. In transverse sections, the outlines of both shell 

 and siphuncle of the Nelson River specimens are broadly elliptical, but 

 this appearance is probably due to the abnormal compression to which 

 they have been subjected. 



Endoceeas subannulatum, Whitfield. 



Undoceras [Cameroceras) svhannulatum^Vfhit- 



field 1882. Geol. Wisoons., vol. IV„ p. 230,-pl. 1, 



figs. 15 and 16. 



Endoceras subannulatwm,, Whiteaves 1891. Trans. Royal. Soc. Canada, Vol. IX., 



Sect. 4, p. 77, pi. 5, figs. 2 and 2a. 



" Numerous examples of a large annulated Endoceras, which in many 

 respects agree fairly well with Professor Whitfield's description of this 

 species, have been collected in the valley of the Red River, on the western 

 shore of Lake Winnipeg and on many small islands in that lake. Speci- 

 mens in which the annulations of the exterior are preserved were obtained 

 at East Selkirk by Dr. Bell in 1880, by Messrs. T. C. Weston and A. 

 McCharles in 1884 and by Mr. L. M, Lambe in 1890; at Grindstone 

 Point, Lake Winnipeg, by Mr. Weston in 1884, and by Mr. J. B. Tyrrell 

 in 1889; near Cat Head, by Mr. Donald Gunn in 1853;'' at Little 

 Black Island by Mr. Tyrrell in 1889, and by Messrs. Dowling and Lambe 

 in 1890; at Snake, Jack Head, Little Black, and Big Sturgeon islands, 

 by Messrs. Dowling and Lambe in 1890. "Very large but badly 

 preserved specimens, which probably belong to the same species but 

 which do not show the characteristic surface Qroamentation, were col- 



