Balcer — The Molluscan Fauna of the Dells of Wisconsin. 105 



Philomycus carolinensis Bosc. 



This slug was very abundant in the woods in and bordering 

 Artist's Glen and in the woods bordering Cold Water Canon. 

 In the latter place it was found feeding on the fungus Pluteus 

 cervinus, in the early morning. Every log which was damp 

 beneath supported one or more of these curious animals. I 

 have stated elsewhere that Philomycus is solitary in habit, 

 and while this may be true in some localities it is not so for 

 the Dells region, for as many as four or five specimens were 

 found under a single log, many times bunched together. 



Agriolimax campestris Binney. 



Found abundantly, associated with the last species. 



Family Zonitidae. 



ZONITOIDES ARBOREUS Say. 



Very common in Cold Water Canon, Witches Gulch, 

 Lower Dells and Artist's Glen, associated with Strobilops 

 affinis and Vitrea hammonis. 



ZoNiToiDES NiTiDUS Miillcr. 



Cold Water Canon and Lower Dells ; not common. 



EucoNULUs FULVus Drapamaud. 

 Cold Water Canon, rather common. 



Vitrea HAMMONIS Strom, (radiatula Alder). 



Cold Water Canon and Cold Spring, not common. 



Family Helicidae. 



PoLYGYRA multilineata Say. 



Artist's Glen and Cold Water Canon, not common. It is 

 probable that the lack of limestone in this region discourages 

 the larger helices from inhabiting this area in any number. 



PoLYGYRA MONODON Rackctt. Var. fraterna Say. 



Artist's Glen, Cold Water Canon, and Lower Dells. 

 This is one of the most abundant helices in this region. 



Issued May 11,1904. 



