254 THE CANADIAN NATURALIST. [Vol. vl. 



Lagena Sulcata - — -- (Yar. distoma.) 



• — — — - — = (Yar. semisidcata.') 



Fossil — Leda clay, Montreal ; Quebec ; Murray Bay; Riviere- 

 du-Loup ; Portland (Maine.) 



Recent — Gulf St. Lawrence, 18 to 313 fathoms, Gr.M.D. 



Rather rare in the Post-pliocene as well as in the recent. 



Entosolenia glohosa. 



— — costata. 



margin ata. 

 — — ——squamosa. 



Fossil — Montreal, Leda clay ; Labrador ; Riviere-du-Loup ; 

 Murray Bay; Quebec; Portland (Maine). 



Recent — Gulf and River St. Lawrence, 20 to 313 fathoms. 

 G. M. D. 



Generally diffused in the Post-pliocene, and presenting the same 

 range of forms as in the recent ; but not common. I regard the 

 supposed species of Entosolenia above named as merely varietal 

 forms. 



Bullm'uia Presli. 



— — — (Yar. squamosa) 



Fossil — Montreal, Leda clay ; Labrador ; Riviere-du-Loup ; 

 Murray Bay; Quebec; Portland (Maine). 



Recent — Gulf and River St. Lawrence, 10 to 313 fathoms, 

 G. M. D. 



Generally diffused in the Post- pliocene. In the recent it seems 

 to be a deep-water form. What Parker and Jones call the essen- 

 tially arctic form B. eleganfissima is not uncommon, though 

 other forms also occur. 



Poli/morj)liina laciea. 



Fossil — Montreal, Leda clay ; Labrador ; Riviere-du-Loup ; 

 Murray Bay. 



Recent — Gulf and River St. Lawrence, 30 to 313 fathoms. 



G. M. D. 



Not uncommon in the Post pliocene, particularly in the deeper 

 parts of the Leda clay. Less common recent. I observed in the 

 Riviere-du-Loup gatherings a small individual of this species 

 with the internal pipe at the aperture characteristic of Entosolenia, 

 which is also sometimes observed in recent specimens. 



