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 monodon Rack. ‘This species is well-distributed and 
very common in places on the cliff side at the Island. I havea 
- record of 140 specimens taken November 12, 1892, and have found 
2() 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 monodon Rack, var. fraterna Say. A few approaching 
this variety were taken in the neighborhood of the Gomin swamp 
on the mainland. 
Vallonia pulchella Mill. Common on the mainland at foot of 
cliffs, and on the Plains of Abraham, also observed on the Island. 
Vallonia costata Mull. Occurs with pulehella 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 pulchella, not observed elsewhere. 
Vallonia labyrinthica Say. Chiefly from the Island, and generally 
from the dryer parts of the woods. 
Pupa armifera Say. Recorded by the late Abbé Provancher as 
being common on the Plains of Abraham; it may be taken there in 
some abundance with Val/onia from under pieces of rock. I have 
taken single examples on the Island and at Levis. 
Sphyradium simplex Gould. Rare, Island d’Orleans. 
Vertigo milium Gould. A. few on the mainland, more common on 
the Isle d’Orleans. 
Vertigo ovata Say. Fairly plentiful in some localities. 
Vertigo gouldii Binn. Rare, Isle d’Orleans. 
Vertigo ventricosa Morse. Rare, Isle d’Orleans. 
Vertigo pentodon Say. Isle d’Orleans, local. This shell has a 
habit of coating itself with dirt, like Succinea avara Say, and conse- 
quently it is difficult to find. 
Vertigo bollesiana 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 curvidens Gould. Isle d’Orleans, rare. 
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