420 Newer Pliocene and. Post Pliocene Deposits 



specimen found -with Fusus, &c., at Montreal. Being a pearly 

 shell it crumbles and can scarcely be preserved entire.^ Dr. 

 Gould remarks: — "The synonymy is not quite clear; a very 

 different shell has usually been held for M. . discors. Neither M. 

 discors nor discrepans of Gould is this shell ; but M. nexa is the 

 young. It is figured by Beck in Gaimard Yoy. en Iceland et au 

 Greenland, as M. striatula. A northern shell." 



Pecten Islandicus, ^lull. (Fig. Can. Nat. vol. 1.) Beauport. 

 Recent Connecticut and northward. Fossil British Crag, (Lam. 

 and Cor.) 



Bhynconella psittacea, Chemnitz, (Fig. Can, Nat. vol. 1.) 

 Beauport. Ptecent Gulf St. Lawrence. Fossil in British Crag, 

 (D. S. Cor.) 



Articulata. 



Balanus ITameri, Ascanius, (Fig. Can. Nat. vol. 1.) Beauport 

 and St. Nicholas, not as yet at Montreal. This is the B. uddeval- 

 lensis of Lyell's list, and appears to be the B. miser of the New 

 York Reports. Fossil in European and British pleistocene ; 

 recent in British and American seas. I have a fine specimen 

 with the animal from the coast of Nova Scotia. (Cor.) A deep 

 water shell according to Darwin. Fig. 25 represents the opercu- 

 lar valves from St. Nicholas. 



Balanus crenaius, Brug. Abundant at Montreal, <fcc. The 

 variety elongatus is very plentiful, also the depressed variety. 

 It is often attached to mussel shells and to pebbles in the stratified 

 gravel. (Deep water, — Darwin.) As I am not aware that the 

 opercular valves of this species have been previously found in 

 Canada, I have represented a pair in Fig. 26. 



Balanus porcatus, Da Costa. Darwin, in the Palaeoutographical 

 Society's publications, gives this as one of the Beauport species in 

 Sir C. Lyell's collection. 



*Cytheridea, (Fig. 14.) At Logan's farm Montreal, with sponge 

 spicula, &c. It resembles C. Miiileri (Miinster), recent in the 

 Zuvder Zee, fossil in the Pliocene of the Netherlands and in the 

 Eocene of England, so closely that I have not much hesitation in 

 referring it to that species : (see Jones in London Geological 

 Journal, vol. x. 160.) 



* Spirorhis sinistrorsa, Montague, (Fig. 15.) At Mile end 

 quarries, Montreal, attached to shells of Mya truncata and to 

 pebbles in ttratified gravel. Recent George's Bank, (Cor.) 



