the hamilton association. 9 1 



Mesodon Sayi. 



A rare shell, only one specimen having been taken here last 

 season, the exact locality being unknown. This species, at 

 first sight, somewhat resembles M. thyroides, but has a much 

 larger umbilicus, also a small tooth on the lip which may 

 be easily overlooked. On Good Friday, April 19th, a dead 

 specimen was obtained in the ravine, under the Albion Mills, 

 showing one locality, at any rate, where it may be found. 

 Fruticicola cantiana. 



Observed in thousands along the heights overlooking the St. 

 Lawrence River, near Quebec, last September. This 

 Helix has been imported from England or Europe, and 

 perhaps it is only a question of time before it has travelled 

 this way. 

 Ferrusacia subcylindrica, Linn. 



Common on banks and in open woods under logs. 

 Strobila labyrinthica, Say. 



A few specimens were taken from a stream in woods, March 16th. 

 Pupa contracta, Say. 



Found in a stream in woods. 

 Pupa corticaria, Say. 



Found in a stream in woods and also under loose bark on logs. 

 Pupa armifera, Say. 



Very common on a dry, sunny bank overlooking Hamilton Bay, 

 towards the Valley Inn, March 17th. 

 Pupa fallax, Say. 



In same locality as last species, but much more rare. Only 

 once previously reported from Canada. 

 Carychium minimum. 



Common everywhere in damp spots under logs. This is the 

 smallest shell yet taken. 

 Succinea obliqua, Say. 

 Succinea avara, Say. 



These two Succineas are common in woods near streams. 



Succinea ovalis. 



Common along the shores of the Dundas Marsh and some 

 parts of Hamilton Bay. 



Two species of Pupa and three other varieties of small land 

 shells, taken this season, have not yet been determined. 



