THE CANADIAN ENTOMOLOGIST. 83 



as is evidenced by Norton's statement that he had not seen either 

 hcejnorrhoidalis or inajirus. 



The first record of a (Canadian specimen is by Westwood, who 

 described the $ of Sayi from one taken in Nova Scotia, the ^ having 

 been sent by Say from Indiana. Provancher records the occurrence of 

 hceviorrhoidalis in the Province of Quebec, a single $ having been cap- 

 tured by him. 



The first specimen which came under my personal observation was a 

 ^ captured by Mr. Fletcher in this city in 1883. This insect, through 

 the kindness of Mr. Guignard, is now in my collection under the name 

 occideiitalis. It was not until 1885 that I succeeded in capturing speci- 

 mens, as described in the note mentioned at the commencement of this 

 paper. Last year, 1886, I was more successful, and not only found sev- 

 eral specimens, but was able to learn something definite as to their habit 

 of life. Between the 9th and 23rd June, I captured more than a dozen, 

 including representatives of all the American species except Mexicanus. 



After a very careful comparison of these and other specimens with one 

 another, and with the descriptions of the several species, I am convinced 

 that they are all varieties of one species, and that there are at the most 

 only two American species, namely, O. Mexicanus Cresson, and O. Sayi 

 Westwood, whose name takes precedence over those of Newman and 

 Harris. The latter, indeed, stated that his affinismx^X. be identical with 

 maurus, as it differed only in having the face entirely black and the feet 

 reddish. Provancher (Additions and Corrections, page 27), after record- 

 ing the occurrence of occidentalis at Ottawa, states that the examination 

 of a number of specimens might possibly prove it to be identical with 

 hcemorrhoidalis. 



As Harris did not publish descriptions when he named his species, 

 those of Westwood and Newman must replace them, and the species will 

 stand at present : —  



1. Oryssus Sayi, Westwood — 1835 ^ hcemoj-rhoidalis, Harris. 



2. terminalis, Newman — i'&2,^ = viaurus, Harris. 



3. ajffinis, Harris — 1841. 



4. occidentalis, Cresson — 1879. 



I have before me twenty specimens which may in accordance with 

 descriptions be distributed as follows : — 



No. 1. Two % (one taken by Mr. J. D. Evans at Sudbury), one $ . 



