246 THK ICE A(iE TN CANADA. 



I'hmorhi^ liicdr'nHitK'i. Say. 



Fossil — Pakenhain Mills, Saxicava sand. 



Planorliis trirolvh. .'^ay. 



Fossil — Pakenhain Mills, Saxioava Scand. 



PJctnorlil.t parrii.-i. Say. 



Fossil— Pakcnhani Mills, Saxicava sand. 



All of tiie above pulnionates are modern Canadian species, and seem 

 to have been drifted by some fresh-water stream into the sea of the 

 Saxicava sand and Leda clay. 



Sij)hoiio-(/i iit(t/iii))i rilrtinii. Sai's. 



Fossil — Leda clay, Mnrray liay ; also Xorw.ay (Sars). 

 Recent — (!nlf of St. Lawrence (Wliiteaves) ; coast of Norway (Sars). 

 It is a rare deep-water shell. 



Aminila (Slimiisonclla) Emcrxonu. Couthuoy. 



Fossil— Montreal. (Plate L, Fig. 10.) 



Recent— Murray Bay; Little Metis; Riviere-dii-Loup ; Halifax; 

 coast of New England. 



My specimens are merely detached valves. They indicate an 

 animal (juite similar to specimens from Halifax referred to tliis species, 

 but dilTer slightly from specimens from Murray Bay. Dr. Carpenter 

 lias labelled the drift form var. "((//lor." The differences among the 

 recent specimens, as well as tiie fossil valves, are discussed in the 

 "Contributions to a Monograph of the Chitonida'," prepared liy Dr. 

 Dall partly from Dr. Carpenter's notes, and printed by tlie Smitiisonian 

 Institution. 



Punclurtl/a (Cemoria) noachiiid, Linn. 



Fossil— Quebec ; Riviere-du-Loup ; Clyde be(is. 



Recent— Little Metis; (Jaspe ; Murray Bay; Labrador; (iulf St. 

 Lawrence generally; and throughout the Arctic seas and North 

 Atlo-ntic. 



Acmct'd teKtuilijialis. Miiller. 



Fossil— Labrador. 



Recent — Tadousac ; Little Metis ; Rivicre-du-Loup ; Murray Bay ; 

 Oaspti ; Pictou ; Gulf St. Lawrence generally; and throughout the 

 Arctic seas and North Atlantic. 



