90 JOURNAL AND PROCEEDINGS 



to the Canadian list, but is comman in some parts of the 

 United States. It was first collected on Nov. 15 th, last year, 

 in a ravine running down to the Marsh, and has been found 

 this year to be generally distributed around the Marsh, but 

 has not been taken in abundance. 



(non-operculate.) 



Hyalina nitida, Say. 



Common everywhere in damp places, under logs, etc. 

 Hyalina indentatus, Say. 



A few specimens only have been found under moss on decaying 



stumps and logs, along the side of the Mountain. 

 One or two species of Hyalina are still to be determined. 

 Patula alternata, Say. 

 Patula striatella, Anthony. 



These two species are common everywhere in woods and damp 

 spots. 

 Patula perspectiva, Say. 



This shell appears to be rare here, a few only having been found 

 along the side of the Mountain. 

 Mesomphia fuliginosua. 



Taken May 5th, on a mossy bank, at the mouth of a ravine run- 

 ning down to the Dundas Marsh. One specimen only was 

 found last season. 

 Triodopsis palliata, Say. 



Not common. Along the Mountain side. 

 Triodopsis tridentata, Say. 



In same locality as the last species, but more abundant. 

 Stenotrema monodon, Rackett. 



A variable shell. One or two specimens only have been taken. 

 Stenotrema monodon, Rackett. var. fraternum. 



This is considerably larger than the type and has the umbilicus 

 closed. It is common in woods. 

 Mesodon albolabris, Say. 

 Mesodon thyroides, Say. 



Both the above species are abundant throughout this district. 



