PLEISTOCENE FOSSILS. 223 



side of the aperture A few have two of these. Old colonies have a 

 pitted calcareous deposit between the cells. The large size and narrow 

 aperture with deep sulcus in front and four spines behind are as in the 

 specimens formerly described. 



Specimens of this species were sent in 1883 to Rev. Thomas Hincks, 

 and he writes to me as follows : " The specimens of Lepralia quadri- 

 cornuta which you were kind enough to send me reached me in perfect 

 safety, and I have been much interested in examining them. None of 

 the specimens that I had seen previously showed the real character of 

 the orifice, and I was therefore led to refer your species to L. coccinea, 

 which, in most points of structure, it closely resembles. Indeed, the 

 only difference of much significance is found in the form of the mouth, 

 but this is very marked and distinctive. I am now fully convinced that 

 your species is a good one, and shall take an early opportunity of 

 correcting the error in my ' History. ' It has a special interest as being 

 the only Post-pliocene form that is not known to have survived. " 



Lepralia spinifera? Busk. 

 Fossil Riviere-du-Loup. 



L. Violacea ? Johnston. 

 Fossil Riviere-du-Loup. 



L. variolosa. Johnston. 

 Fossil Riviere-du-Loup. 

 Recent Gaspe. 



L. globifera. Packard. 



Fossil Riviere-du-Loup. 

 Recent Labrador (Packard). 



Porella Belli. (Lepralia Belli. Dawson.) 



Fossil Riviere-du-Loup. 

 Recent Gaspe ; Labrador (Packard). 



This species, according to Hincks, is identical with Porella 

 Coricinna. Busk. 



Porella elegantula. D'Orbigny. 



Fossil Riviere-du-Loup ; Montreal (Curry). 



Recent Labrador (Packard) ; Gaspe. 



Very fine and frequent in 10-30 fathoms opposite Cape Rosier 

 Village. J. F. W. 



