LYMN^EUXE OF NORTH AMERICA. 



445 



Types: Two specimens, Smith. Inst., No. 118626. 



Type Locality: Willamette (Wahlamat) near its junction with 

 the Columbia River, Oregon. 



Animal, Jaw, Radula and Genitalia : Not examined. 



Range: (Figure 50). Northern part of the lower peninsula of 

 Michigan (86°) west to Western Washington; Ontario south to South- 

 ern Wyoming and South Dakota. 



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Fig. 50. 



Apicina is an inhabitant of about the same drainage area as bin- 

 neyi (Great Lakes, Columbia and Missouri rivers). It occupies the 

 Canadian, Columbian and a part of the Upper Mississippian regions. 

 It is also typical of the Boreal (Canadian) and Transition life zones. 

 In fact, both binneyi and apicina may be said to occupy a strip of ter- 

 ritory ten degrees in width from Michigan to Washington. The 41st 

 parallel marks its known southern range while the 50th parallel marks 

 its northern extension. 



RECORDS. 

 United States. 



Michigan: Union River, Ontonagon Co. (Ruthven; Walker); Mulletts 

 Lake, Sheboygan Co. (Walker) ; shore of Lake Superior, Ontonagon Co. ; Me- 

 nominee River, Dickinson Co. ; Twin Falls, Brule River and Michigamme River, 

 Iron Co.; middle and lower beach, Lake Superior (Walker and Ruthven). 



Montana: Madison Co. (G. P. Merrill). 



Oregon : Willamette River, near its junction with the Columbia River, 

 Columbia Co. (Lea; Nuttall). 



