PROCEEDINGS, 191G g 



median space often profusely mottled with the same colour. This 

 species occurs all over the southern part of British Columbia and \'an- 

 couver Island, but is more uncommon than giganteus. It generally flies 

 from the beginning to the end of June. This form has been invariably 

 sent to me under the name of honestarius (ancetaria), which species 

 does not occur, as far as is known, any further west than Calgarv, and 

 must accordingly be struck off our lists. 



Pero behrensarius Pack. Of this species I can say but \ery little, 

 and it must be exceedingly rare, as I believe it is contained in onl}- two 

 collections. Mr. Grossbeck had nine specimens before him when writing 

 his Monograph, of which seven came from Oregon, one from California, 

 and one from Rossland, B.C. The latter was dated June 3rd, but by 

 whom it was taken is not recorded. I had hoped to have found a speci- 

 men amongst Mr. W. H. Danby's material (he having collected at Ross- 

 land for several years), but was disappointed in this respect, although 

 he had specimens of the other three species. Speaking of this form. 

 Air. Grossbeck says : "It is a very distinct and easily recognized species, 

 separable from all the others by the granite-grey ground and the sharply 

 defined median area." 



To summarize the foregoing, the species of this genus will stand in 

 our lists as follows : 



PERO Herr-Sch. , 

 giganteus Grossbeck - Generally distributed. 

 occidentalis Hulst - - Rossland; Kaslo ; Okanagan Falls. 

 morrisonatus Hy. Edw. - Generally distributed. 

 behrensarius Packard - Rossland. 



Author's Note. — Since the above article was written, the following 

 additional data has been gathered : 



Pero behrensarius Pack. Recently in going over a collection of 

 Lepidoptera made by Air. W. Downes. at Armstrong, B.C., a few years 

 ago, I found two specimens of what are undoubtedly this species, taken 

 in July, 1914. They agree perfectly with Grossbeck's description and 

 are easily separable from the other three species found in this Province. 



Pero occidentalis Hulst. On June 4th, 1917, I took at light a speci- 

 men of Pero, which seemed to me to be different to any that I had 

 hitherto taken in Victoria. Upon examination under a binocular, it 

 proved to my surprise to be occidentalis. This, to my knowledge, is the 

 first record of this species on Vancouver Island, and considerably 

 extends its known range in F)ritish Columbia. On June 7th. 1 took 

 another one. also at light, both s]:)eciniens being males. 



Pero morrisonatus Hy. Edw. It is well to note that in Alessrs. 

 Barnes and McDunnough's New Check List (1917) the name morri- 

 sonatus has been altered to morrisonarius. EH B 



