1 34 
The Ohio Naturalist. 
[Vol. VII, No. 7, 
Ste. Marie) tend to confirm this old record, although it has yet to 
be demonstrated that the species is found in Lake Superior 
proper. 
2. Canibarus virilis Hagen. Locality: Crooked Lake, Oden, 
Emmett County, Michigan. 
Distribution: Abundant in the Mississippi and Missouri 
drainage from northern Texas, Arkansas and Oklahoma, through 
Kansas, Missouri, eastern Nebraska, Iowa and western Illinois 
to Michigan and Minnesota. In the latter states, also in northern 
Indiana, it is found in the drainage of the Great Lakes. In 
northern Minnesota and north Dakota it has invaded the drain¬ 
age of the Red River of the North, and goes through Winnipeg as 
far north as Saskatchewan (Hagen). It is also found in eastern 
Ontario, and the drainageof the lower lakes and the St. Lawrence, 
but not on the United States side: Toronto (Faxon); Sandy 
Lake, Peterborough County (Ortmann) and there is a fine series 
of this species in the Carnegie Museum from the new locality: 
Rideau River. Billings Bridge, Ottawa. This latter locality, 
Emmett Co.. Michigan, and Lake Superior in Minnesota (Her¬ 
rick) mark the northern boundary of this species in the Lake 
region. The absence of this species in the whole of the Ohio 
drainage is remarkable. 
3". Cambcirus bartonii (F.). Locality: Dam Creek, Search- 
mont, Algoma District, Ontario, Canada (region of eastern end 
of Lake Superior). 
The specimens at hand agree in all essential points with the 
typical form of C. bartonii as found in Pennsylvania; and also 
in minor points there is not the slightest difference; there is no 
approach whatever to C. bartonii robustus (Gir.). 
Distribution: C. bartonii belongs to the Appalachian Sys¬ 
tem, ranging from Tennessee and North Carolina to Maine and 
New Brunswick. Its northwestern boundary is formed by the 
St. Law’rence River and the lower lakes, it never having been 
reported, with one exception, to the north of this line. This 
only exception is near Lake St. John, in Quebec, for to the 
northeast of the range in the States of Ohio and Indiana this 
species does not reach the Lake region and it has never been 
found in any part of Ontario, Michigan and Wisconsin. 
Indeed Hagen gives, upon the authority of L. Agassiz: Lake 
Superior, a record that has been dropped by Ortmann (Trans. 
Am. Phil. Soc. 44 ’05, p. 135). The present locality, however, 
confirms this old record, at least in so far as this species is 
positively found in the Lake Superior region. Nevertheless this 
locality appears strange since it is so far remote from the rest of 
the range, the nearest place, in western New' York, being about 
400 miles away. In the intervening region in eastern Ontario, 
