122 THE CANADIAN ENTOMOLOGIST. 



NOTES ON SOME ONTARIO ACRIDIID^. 



BY E. M. WALKER, TORONTO. 



As SO little is known of the Orthoptera of Canada, the following notes 

 on the species of Acridiid^, which I have taken in Ontario, may prove of 

 some value. They are by no means intended to form a complete list of 

 the species found in Ontario, but only of those which have come under 

 my own observation. 



The great majority of my specimens were taken from but two locali- 

 ties — Toronto, and the vicinity of DeGrassi Pt., Lake Simcoe, about fifty 

 miles farther north. Although so near each other, the entomological 

 fauna in these two localities differs somewhat ; many forms common on 

 the Niagara peninsula and southward being found as far north as Toronto, 

 but not extending to Lake Simcoe, while several northern forms have 

 their southern limits, at least in Ontario, about Lake Simcoe. But although 

 the collecting grounds in both these places are very rich and varied, there 

 are no doubt a number of Ontario species not represented in either. The 

 great Archaean region forming the northern and greater part of Ontario 

 has been but little explored from an entomologist's standpoint, and 

 possibly many interesting species occur there, while there are doubtless 

 southern forms not yet recorded from Canada whose range extends into 

 the Niagara peninsula. 



My thanks are due to Mr. S. H. Scudder, Mr. A. P. Morse, and Mr. 

 W. S. Blatchley for the determination of doubtful species. 



I. — Tettigin^e. 

 I. Tettix ornatus. Say. 



Acrydium orfiatum, Say; Amer. Entom., 1824, I., pi. V. 

 Tettix o?-nata, Say; Scudd., Mat. Mon. of N. A. Orth., 1862, 474. 

 " dorsalis, Harr.; Ins. Inj. to Veg., 1862, 186. 

 " qiiadf'imaculata, Harr.; loc. cit., 186. 

 " bilineata, Harr.; loc. cit., 186. 

 " ornatus, Say; Fernald, Orth. N. E., 1888, 46. 

 Form, triangularis, Scudd. 



Tettix triangularis, Scudd.; Mat. Mon. N. A. Orth., 1862, 475. 

 This species is the commonest member of the subfamily occurring 

 about Toronto and Lake Simcoe. It frequents the damper parts of 

 pastures, wet ditches, etc., and is also found, especially the short-winged 

 form, triangularis, in quite dry, sandy or gravelly uplands. Though 

 generally found in the neighbourhood of woodlands, it does not seem to 



