Till'. NAUTILUS. 103 



critically examined by Dr. V. Sterki, will. out whose generous assist- 

 ance it would have been impossible to determine the many small 

 species. 



There is some additional material in the hands of Dr. Sterki, 

 which when straightened out will probably add a number to the list. 

 Most of the species are distributed over the whole area, and the 

 names of localities are only cited in referring to species that are 

 very local in their distribution. 



In this list are included a number of species that have been cited 

 lis doubtful in Maine, and the new species recently collected by me. 



List of Sueciks. 



Acanthi itula hurpa Say. One specimen at Fort Kent. 



Vallonia pulchella Mull. Gardens in Caribou and Presque Isle. 



Vallonia excentrica Sterki. Rare, Caribou. 



Polygyru albolabris Say. Not common. 



Polygyra Sagii Binn. Well distributed. 



Polygi/ra dentifera Binn. Rather common. 



Polygyra monodon Rackett. Common in some localities. 



Strobilops labyrinthica Say. Plentiful in this region. 



Strobilops virgo Pils. Rare (identified by Dr. V. Sterki). 



Bifidaria pentodon Say. '-Resemble curvidens more than any 

 others I have situ " (Sterki). Near Caribou stream, Woodland. 



Vertigo ventricosa Morse. Plentiful in some localities. 



Vertigo ventricosa elatior Sterki. Common along streams, in 

 Woodland, Caribou and New Sweden. 



Vertigo bollesiana Morse. Rare ; collected in woodland. 



Vertigo Gouldii Binn. Not very abundant. 



Vertigo Gouldii paradoxa Sterki. " Fine examples with the two 

 palatal folds continuous ami one angular" (Sterki). Woodland, rare. 



Coc/ticopa lubrica Mull. Houlton, Presque Isle, Caribou, Fort 

 Kent and Portage Lake, abundant in these localities. 



Vitrina limpida Gld. Caribou and Presque Lie, found in large 

 numbers this summer at Fort Kent. 



Vitrcn kammonis Strom. Fairly distributed. 



Vitrea Binneyana Morse. Little Madawaska Lake and along 

 Caribou stream in Woodland and Caribou. 



Vitrea ferrea Morse. In company with V. Binneyana. These 

 species are rarely found. 



Conulus fulvus Mull. Everywhere. 



