100 THE NAUTILUS. 



Pupa muscorum in untold numbers, CochUcopa lubrica Mull, Vilrea 

 hammonis Strom, Zonitoides arboreus Say and Succinea obliqua Say. 

 At Southwest Harbor Village, under planks, by the road-side I 

 found: 



Vitrea hammonis Strom. Vertigo ventricosa Morse. 



Zonitoides arboreus Say. Sphyrudium edendulum Drap. 



Zonitoides milium Morse. CochUcopa lubrica Mull. 



Vitrina limpida Gld. Pyramidula striateila Anth. 



Euconulus fulvus Mull. Vallonia excentrica Sterki. 



Strobilops labyrinthica Say. 



The great majority of the species that I found were in Sea Wall 

 and McKinley Villages. These two villages were about three miles 

 apart. Here the conditions were the same. New board-walks were 

 being built along the road and the planks of the old one were thrown 

 into the gutter and into the adjoining fields. I found the following 

 under these boards or in the grass near the boards : 



Sea Wall Village. McKinley Village. 



Vallonia excentrica Sterki, abun. Vollonia excentrica Sterki. 

 Pupa muscorum L., abundant. Vertigo ventricosa Morse. 

 CochUcopa lubrica Mull, abun. CochUcopa lubrica Mull. 

 Vitrina limpida Gld. abun. Vitrina liinpida Gld. 



Vitrea hammonis Strom. Vitrea hammonis Strom. 



Euconulas fulvus Mull. Euconulus fulvus Mi.il!. 



Zonitoides arboreus Say. Zonitoides arboreus Say. 



Zonitoides exiguus Stimp. Agriolimax agrestis L. 



Agriolimax compeafris Binn. Agriolimax compestris Binn. 



Pyramidula striateila Anth. Pyramidula striateila Anth. 



Helicodiscus lineatus Say. Helicodiscits Jineatus Say. 



Succinea obliqua Say. Succinea obJiqua Say. 



Succinea avara Say. Succinea avara Say. 



Acan/hiuula harpa Say. Acanthimila harpa Say. 



I visited a number of islands but explored only a few carefully. 

 I spent an hour on the evergreen woods of Suttons and found a few 

 Zonitoides arboreus Say. An hour on Baker's Island, an hour on 

 Black Island and six hours on Little Goat's Island, revealed me noth- 

 ing. On Little Ram Island, a rock about a hundred feet long cov- 

 ered with about three feet of soil which supports a number of dead 

 spruce trees, I got Zonitoides arboreus and Succinea obliqua under 

 some dead wood. On Greening's Island, where I lived and explored 



