THE NAUTILUS. 101 



difficult to find, as they adhere to the dead leaves, and, unless felt, 

 may then easily be turned over and lost. 



Polygyra inoiiodon Rack. This species is well-distributed and 

 very common in places on the cliff side at the Island. I have a 

 record of 140 specimens taken November 12, 1892, and have found 

 20 or more all together in fact, on the cliff side, either in the fall 

 or spring, it is usual to find these large families buried together in 

 the loose, shaly rock. At other places where I have collected, it 

 has been unusual to find more than a pair together. A few of my 

 Isle d'Orleans specimens are very fine, and have the umbilicus un- 

 usually large. 



Polygyra m,i>ii<>ilon Rack, var. fraterna Say. A few approaching 

 this variety were taken in the neighborhood of the Gomin swamp 

 on the mainland. 



Vallonia pulcheUa Mull. Common on the mainland at. foot of 

 cliffs, and on the Plains of Abraham, also observed on the Island. 



Vallonia costata Mull. Occurs with pulcheUa on both sides of 

 the St. Lawrence River, but is not so plentiful. 



Vallonia excentrica Sterki. Local, at foot of cliff at St. Joseph's 

 with pulcheUa, not observed elsewhere. 



Vallonia labyrinthicaB&y. Chiefly from the Island, and generally 

 from the dryer parts of the woods. 



Pupa armifera S&J. Recorded by the late Abbe Provancher as 

 being common on the Plains of Abraham ; it may be taken there in 

 some abundance with Vallonia. from under pieces of rock. I have 

 taken single examples on the Island and at Levis. 



Sphyradium simplex Gould. Rare, Island d'Orleans. 



\'< rtii/o milium Gould. A few on the mainland, more common on 

 the Isle d'Orleans. 



l'i f/iijo urnta Say. Fairly plentiful in some localities. 



Vertigo gouldii Binn. Rare, Isle d'Orleaus. 



Vertigo ventricosa, Morse. Rare, Isle d'Orleaus. 



Vertigo pentodon Say. Isle d'Orleaus, local. This shell has a 

 habit of coating itself with dirt, like Succinea avara Say, and conse- 

 quently it is difficult to find. 



Vertigo bolfesiana Morse. Common on mossy rocks under cliffs 

 at St. Joseph's and St. Romauld's. A form taken with this, Dr. 

 Sterki calls the New England variety. 



Vertigo eurvidens Gould. Isle d'Orleaus, rare. 



