THE NAUTILUS. 7 



hawk Lake, Wisconsin, where they occupy habitats similar to 

 those in Oneida Lake. This is an interesting case of distribu- 

 tion. Acella haldeniani, Bythinia taitnculata and Vivipara con- 

 tedoides add new localities to the State. The 10 species of 

 Pisidia, 4 of which are still undetermined, is noteworthy. 

 Margaritana had previously been reported from Oneida Lake 

 and the record is now substantiated. A number of common 

 species are reported for the first time from this general region. 

 No list of Oneida Lake mollusks is known to the writer. 

 Beauchamp, however, published an excellent list of the Mol- 

 lusca of Onondaga County, some years ago, and this is the only 

 paper on the mollusks of this region known to the writer. 

 Further studies will doubtless raise the list to upwards of 100 

 species and races. Additions are to be expected in Pisidium, 

 Sphaerium, Musculium, AmnicoUdse, Valvata, Physa, and Galba. 



The studies from which this list has been compiled have 

 been carried on by the writer for the New York State College of 

 Forestry at Syracuse University under the direction of Professor 

 C. C. Adams, Forest Zoologist, for the purpose of ascertaining 

 the relation of the molluscan fauna to the feeding habits and 

 breeding grounds of the fish fauna of the lake, especially the 

 food and game fish. Full information concerning the ecological 

 associations and economic value of the mollusks recorded may 

 be found in Technical Bulletin No. 4, now in press, published 

 by the College of Forestry. The author is indebted to Dr. H. A. 

 Pilsbry, Dr. V. Sterki, and Dr. Bryant Walker for assistance in 

 determining critical molluscan material. 



Class Pelecypoda 

 Family Unionidte. 



Lampsilis luieola (Lam. ) Anodonta cataracta Say. 



Lampsilis radiata (Gmelin) Anodanta marginata Say. 



Lampsilis borealis (Gray) Anodonta impHcata Say. 



Lampsilis iris (Lea) Anodonta grandis Say. 



Nephronajas ligamcntina Anodonta grandis footiana 



(Lam. ) Lea. 



Strophitus ede)itidus (Say) Alasmidonta undidata (Say) 



Strophitus undulatus (Say) Elliptio complanatns (Dillwyn) 



