THE CANADIAN ENTOMOLOGIST. 3 



This species is found plentifully in Southern Ontario, along the shores 

 of the great lakes, occurring in a form somewhat different from the typical 

 one of the Atlantic Coast, and to which I have given the racial name, 

 interior (Can. Ent., XXX., 262). 



McNeill's description of maritima in his recent Revision (p. 450) 

 seems to have been based entirely upon specimens from the Atlantic 

 Coast, and it does not fit interior in all respects. The width of the 

 wing-band in the latter is often nearly one- fourth the length of the wing, 

 whereas McNeill states that it is never as much as one-sixth ; and the 

 tegmina of interior often show distinct traces of three bands, which fact 

 is also contrary to McNeill's description. Moreover, the measurements 

 given are much too large for the race interior, although the latter is very 

 variable in size. Accordingly, I give the following measurements taken 

 from Ontario specimens : 



Length of body, $ 19 to 22 mm., ? 26 to 30 mm. 



Length of tegmen, $ 19 to 24 mm., V 27 to 31 mm. 



Length of hind femora, A 11 to 12 mm., $ 13.5 to 15.5 mm. 



I have specimens from the following localities : Toronto Id., July- 

 Sept. • Rond Eau, Sept. 14, 1899 ; Point Pelee, Aug. 7, 1901 ; Kings- 

 ville, Aug. 13, 1897 ; Walpole Id., St. Clair River, Aug. 13, 1901 ; 

 Southern extremity of Lake Huron, near Sarnia, Aug. 12 and 14, 1901. 



2. Trimerotropis Pcaeruleipes, Scudd. 



Trimerotropis cceruleipes, Scudd., 2nd Rept. U. S. Ent. Com., 

 App. 1 1, 1880, p. 27. 

 Mr. Scudder, to whom I sent a specimen of this insect for determi- 

 nation, replied that it was " apparently a new species near cccruleipes, or 

 else that species, which is very variable," and remarked that he had a 

 specimen like mine from Yellowstone Park. My specimens are from 

 Discovery Id., near Victoria, B. C, Sept. 6, 1897 ; Nanaimo and Dun- 

 can's, Vancouver Id., Sept. 7, 1897. ^ ' s a ver T common insect on 

 Vancouver Island, in both rocky and sandy districts. I found it in 

 great numbers on Discovery Id., one of tlie numerous small islands near 

 Victoria. Here it flew with a swift, low flight about the bare rocks in 

 the more open places, the males producing a very rapid crepitation. 



3. Trimerotropis monticola, Sauss. 



Trimerotropis montico/a, Sauss., Prodr. CEdip., 1884, p. 170. 

 This is the most abundant species of the genus on the dry plains of 

 Assiniboia. It bears an extraordinarily close resemblance to one of the 



