LYMNZID OF NORTH AMERICA. 445 
Types: Two specimens, Smith. Inst., No. 118626. 
Type Locarity: 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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Fic. 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. 
Unitep STATEs. 
MicuicAn: 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). 
Rn 
Orecon: Willamette River, near its junction with the Columbia River, 
Columbia Co. (Lea; Nuttall). 
