44 The Ottawa Naturalist [June- July 



also taken at Toronto in November, from the drift along the shore of 

 the Don River. 



47. Vertigo gouldii (Binney). A single dead specimen of this 

 form was found at De Grassi Point on July 25th in the hardwood. 



48. Vertigo milium (Gould). I found three shells of this tiny 

 form, one of them fresh, at De Grassi Point on May 14th, 1917. They 

 were taken from the forest litter at the edge of a low wood and were 

 associated with Carychium exile canadensis. It has also been reported 

 from the Toronto district. 



The determination is my own and has not been verified, like the 

 other species of Vertigo, by Mr. Bryant Walker. 



COCHLICOPIDAE. 



49. Cochlicopa lubrica (Muller). Common at Toronto where 

 I have taken it in May and October. On October 10th, 1915, I found 

 it in considerable numbers among the fallen needles and other debris 

 at the edge of a pine grove in Wychwood Park. Miss Ford has speci- 

 mens from Mimico, September 9th (1 specimen from dry, stony hill- 

 side); East Toronto, September 30th (5 adults and 3 ' young from 

 beneath stones) and Rosedale, October 5th, (7 specimens from a wood- 

 ed ravine. 



Two specimens were also taken on the Giant's Tomb Island, 

 July 20th. 



49a. Cochlicopa lubrica var. morseana Doberty. De Grassi 

 Point, August 19th, a single example from the hardwood. Another 

 was taken by Miss Ford at Toronto ("old Belt Line Cut," under damp 

 log, June 21st). 



Valloniidae. 



50. Vallonia pulchella (Muller). Abundant at Toronto, April- 

 November, occurring under stones, boards, etc. in more or less open 

 places. In early November I found a considerable number crowded 

 together under a chunk of wood which was half buried in the sand 

 near the edge of the Don River. It is one of the few species which 

 continues to thrive under url^an conditions. 



It was also common at De Grassi Point, in more or less grassy 

 places, occurring plentifully throughout the summer. 



51. Vallonia costata (Muller). Lam'bton (West Toronto), un- 

 der dry log, September 4th, 2 specimens (Miss Ford) ; Rosedale, under 

 dry log in ravine, October 5th, 1 specimen (Miss Ford). 



AURICULIDAE. 



52. Carychium exiguum (Say). Numerous dead specimens of 

 this minute form were found in November in the drift along the Don 

 River, Toronto. Living specimens were also found in wet depressions 

 in a hardwood forest near St. William's, September 3rd A few 

 occurred at De Grassi Point, associated with the next species. 



