8 B. C. ENTOMOLOGICAL SOCIETY 



much material as possible, for the purpose of studying the whole group. 

 With his own large collection supplemented b}' specimens loaned from 

 many different points in the United States and Canada, which included 

 very long series from the collection of Dr. Wm. Barnes, he eventually 

 examined some 800 specimens. The final result of all this work showed 

 that there were nine different species represented on the American con- 

 tinent north of Mexico, five of which had been regarded, at one time or 

 another, as varieties of honestarius. With typical thoroughness, Mr. 

 Grossbeck had slides made of the genitalia, and in every case they bore 

 out the arrangement that he had previously based on superficial 

 characters only. 



Of the nine species listed by him as occurring in Xorth America, 

 there are four which are found in this Province, viz. : giganteus Gross- 

 beck, occidentalis Hulst, morrisonatus Hy. Edw., and behrensarius Pack. 



I will now give a short description of each, with their habitat, which 

 I hope will render them more easy of identification in the future. I have 

 also brought with me specimens of the different species for coinparison. 



Pero giganteus Grossbeck. This is the largest species of the genus, 

 measuring 45-51 m.m. in expanse. Its large size alone will readily dis- 

 tinguish it from the other species. The ground colour of the fore wings 

 is whitish-grey, with more or less of a brownish, or yellowish, cast. The 

 median band in the male is of a dark umber-brown, which becomes more 

 intense as it approaches the extra-discal line. In the female this dark 

 brown colour is replaced by a brighter reddish brown. While not a 

 common insect, it is more abundant than any of the other species that 

 occur in our fauna. It is on the wing from the beginning of July until 

 the end of August, and ranges from Vancouver Island to as far east as 

 Kaslo. This is the species that Taylor listed erroneously as Azelina 

 occidentalis and is labelled as such in many of our collections. 



Pero occidentalis Hulst. This species can be recognized liy the 

 dentate antennae of the male, which at once separates it from the 

 others. It is smaller than the preceding species, being from 38-40 m.m. 

 in expanse. The intra-discal line of the primaries is dark brown and 

 well defined, giving the median area the appearance of a solid dark 

 brown band, which contrasts sharply with the lighter grayish brown of 

 the ground colour. This species is earlier on the wing than any of the 

 others, being found throughout May and June. It is found in the 

 Interior, and is rather uncommon. The specific localities I have for 

 this species are Rossland, June 8th (W. H. Danby) ; Kaslo, June lOtli 

 (J. W. Cockle) ; and Okanagan Falls, May 6th (E. M. Anderson). 



Pero morrisonatus Hy. Edw. This form is readily identified by its 

 peculiarly mottled appearance. The ground colour is of a variegated 

 vellow, the extra- and intra-discal lines being dark brown, and the 



