QUATERNARY FOSSILS. 333 



fer from the description, in the absence of the long tor- 

 tuous canal which gives the species its name. The fos- 

 sils have the same convexity of the whorls, which are 

 covered by similar revolving striae ; but the first whorl is 

 less contracted at the origin of the canal, and the canal 

 itself is from half to two thirds the length of the first 

 whorl, while in F. tortuosus the canal nearly equals the 

 length of the whorl. In this respect it approaches Fusus 

 pygmceus Gould, from which it is distinguished by its 

 size, the greater convexity of its whorls, and the deeply 

 impressed revolving lines. 



This was a frequent shell in the gravel deposit on 

 Caribou Island, and large specimens measured nearly 

 three inches in length. 



Trichotropis borealis Sowb. et Brod. Not uncom- 

 mon at Hopedale and Caribou Island. 



Spirorbis glomerata Mtill. Occurred as usual on shells 

 at Caribou Island. 



S. vitrea Stimps. Only young and flattened speci- 

 mens occurred. 



Spiochcetopterus typus Sars, Fauna littoralis, ii. Frag- 

 ments of tubes belonging apparently to this worm were 

 found fossil at Caribou Island. 



Balanns porcatus Da Costa. Numerous fragments 

 occurred at Caribou Island and Hopedale. 



In the above list occur several forms of great interest 

 which have not been found fossil elsewhere, or in no 

 such profusion, and seem to be perhaps characteristic of 

 this fauna and to have had their metropolis either in this 

 area or in Arctic America, in contradistinction from 

 Arctic Europe. Such are 



