Post-Pliocene Deposits of the St. Lawrence. 35 



show that they were attached to fronds of algae which have 

 entirely disappeared. Being imbedded in soft clay, it is much 

 more difficult to secure perfect specimens than in the case of the 

 species attached to stones. From the position of this Lepralia in 

 the deposit, I infer that it lived in very deep water; and it is 

 possible that when we are better acquainted with the deeper parts 

 of the Gulf of St. Lawrence, it may be found there. Having 

 searched in vain for any described species corresponding with it, 

 I propose for it the name of L. quadricornuta, founded on its 

 most obvious distinctive character, which is of more importance 

 here than in the case of a recent species, owing to the circumstance 

 that the specimens in the clay usually split in such a manner as 

 to show only the inside of the cells, on which the four horns 

 generally remain sufficiently distinct. 



Patches of this Lepralia one inch in length and half an inch in 

 breadth were found at Logan's farm, and the cells were remarka- 

 bly uniform in size and shape. If found in a living state, its large 

 size and elegant vase-like form will render it one of our finest 

 species. Its nearest allies appear to be L. ventricosa, Hassell, L. 

 trispinosa, Johnston, and L. crassispina, Stimpson. 



Before leaving the Bryozoa, it may be well to name the addi- 

 tional species known to me as living in the Gulf of St. Lawrence 

 and likely to occur in the drift : — 



Membranipora pilosa, Gaspe, Nova Scotia. 

 Membranipora, another species, Gaspe. 

 Flustra Murrayana, Gaspe, Metis, Miss Carey's collection. 

 Tubulipora patina, Gaspe, Metis, Nova Scotia. 



T. penkellata, Gaspe. 



Idmonea Atlantica, Gasp6. 



Cellularia neritina, Miss Carey's collection. 



Cellular ia, another species, Gaspe. 



Through the kindness of Andrew Dickson, Esq., I was lately 

 favored with the inspection of a flat stone taken up by the hook 

 of a fisherman on the Banks of Newfoundland, which wonderfully 

 resembles, in its assemblage of species, the stones in the drift at 

 Beauport. It has at one end a group of Balanus crenatus of the 

 precise variety so common in the drift; and over various parts of 

 the surface are abundant shells of Spirorbis sinistrorsa, with at 

 few of another species not as yet found in the drift. Large por- 

 tions of the surface are covered with Lepralia variolosa and 



