ii6 The Ottawa Naturalist. [September 



ON SOME FOSSIL CEPHALOPODA IN THE MUSEUM 

 OF THE GEOLOGICAL SURVEY OF CANADA, 

 WITH DESCRIPTIONS OF EIGHT SPECIES 

 THAT APPEAR TO BE NEW.* 



By J. F. Whiteaves. 



A. — F7'07n the Cambi'O- Silurian rocks of the Provinces 



of Qitcdec, Ontario and Ma7iitoba. 



Nanno AULEMA, Clarke. 



Nanno aulema, Clarke. 1897. Geol. Minn., Final Rep., Vol. Ill, 

 pt. 2, p. 770, pi. 47, figs. 4-1 1. 



Several specimens in the Museum of the Survey, that are 

 obviously referable to this species, were collected by the late 

 Alexander Murray in 1854, from the Black River limestone at 

 Western Manitou Island (now called Macdonald Island), Lake 

 Nipissing, and similar but silicified specimens have been noticed 

 in an old collection of the fossils of that formation from Paquet- 

 te's Rapids. 



Orthoceras tenuistriatum, Hall. 



Endoceras prottifotvie, var. tenuistriatum, Hall. 1847. Pal. N. 



York, vol. I, p. 209, pi, 45, figs. 1, a-b\ and 

 pi. 47, figs. I, a-b, and 2, a-e, 



Orthoceras tenuistriatum, Clarke. 1897. Geol. Minn., P'inal Rep., 



vol. Ill, pt. 2, p. 788, pi. 55, ngs. 5 and 6. 



An unusually well preserved specimen of this species, col- 

 lected by Mr. G. Sutherland in the winter of 1872-73, from the 

 Trenton limestone exposed in excavations for the foundation of 

 the Post Office at Ottawa, was presented to the Museum of the 

 Survey by Mr. W. R. Billings in 1879. The maximum length 



'Communicated by permission of the Director. It is intended to publish illus 

 trations of the new species described in this paper, in one of the Survey publications 



