314 Canadian Record of Science. 



ribs in the curve, on the ventral side, exhibit a tendency 

 to tuberculatum, but the shell being broken off' at thai 

 point, their presence cannot be satisfactorily determined. 



Interspaces between the ribs broadly concave. Septum 

 unknown. Figure, one-half natural size. Locality, Van- 

 couver Island, associated with Ammonites Neiuberryanv.s 

 and another Ammonite, species undetermined, and a 

 Baculite, figured on pi. 17, figs. 28 and 28a, and pi. 14, 

 fig 29. Closely allied, in form and ornamentation, to H. 

 Fremontii, Marcou, Geol. N. America, p. 36, pi. 1, fig. 3. 

 it differs in the ribs continuing completely across the 

 ventral face, and in each rib carrying a node, instead of 

 every third rib, as in Marcou's species." The specimen 

 figured by Mr. Gabb, it may be added, has a little more 

 than four inches of the prolonged portion of the shell pre- 

 served, and a very small piece of the reflected anterior 

 portion. 



Until quite recently, the w T riter had never seen a speci- 

 men of this species. In the fall of 1883, Mr. Walter 

 Harvey, of Comox, V.I., made a remarkable collection of 

 fossils (which has since been acquired for the provincial 

 museum at Victoria) from the Cretaceous rocks at Dennian 

 and Hornby islands, in the Strait of Georgia. This 

 collection was kindly loaned to the writer for examination 

 and study, by Mr. John Fannin, the Curator of the 

 museum at Victoria, in the spring of 1894. Besides other 

 specimens of much scientific interest, which have been or 

 which will be reported upon elsewhere, it contains a fine 

 example of Hamites Vancouverensis or, as it should now be 

 called, Anisoceras Vancouver ense, from Hornby Island. The 

 still more perfect specimen of that species represented in 

 outline, of one-fifth less than the natural size, on the 

 plate which accompanies this paper, was collected by Mr. 

 Harvey at Hornby Island this year (1895) and kindly 

 forwarded to the writer for examination. 



The specimen belonging to the Museum at Victoria is a 



