256 THE CANADIAN ENTOMOLOGIST. 



result. From the length of the larva, z'j4 inches, he judged that it was a 

 female. The form of the species which occurs in the Adirondacks is that 

 with yellow female, but what that form should be called is a matter of 

 some doubt. In Mr. Scudder's " Butterflies of New England," page 1107, 

 he suggests that as this form was first described when the species was 

 re-described by him, under the name Eurymus Philodice, var. Laurentina, 

 it should be designated by the trinominal appellation, Eurymus Interior 

 T^aurentina, the pallid, or white, female being called Eurymus Interior 

 Interior. But it seems to me that the doctrine of priority of description 

 cannot govern the matter in the case of a variety, else we may have what 

 is the normal form in nature labelled as the abnormal in our cabinets, and 

 the abnormal variety of nature standing as the normal form in our cabinets. 

 Clearly, where there is dimorphism in one sex of a species, the form which 

 l)redominates in a marked degree must be considered the normal form, 

 and the other the varietal, all original descriptions to the contrary not- 

 withstanding. Priority must rule in regard to the species, but it must 

 give way where it clashes with nature in regard to varieties. 



The question, then, to be settled, is what is the predominating form 

 of the female in this species ? Possibly at present the material in cabinets 

 may not be sufficient to settle the matter authoritatively, but I believe it 

 wili be found that the yellow or syngenic form is the normal form, and 

 that the antigenic or pallid female is only an albinicform, as in Philodice. 



Among the types of Interior there was only one female, and this hap- 

 pened to be of the pallid form described by Mr. Scudder as "white, 

 with a very pale yellowish tinge " ; but among the large number brought 

 from Cape Breton Island by Mr. Roland Thaxter there were eight pallid 

 fem.ales, and ten which Mr. Scudder called gynandromorphic females, by 

 which not very happy term, I suppose he designated the yellow form. 



Besides the seven females taken by me in the Adirondacks and the 

 three from the same region that I saw in Mr. Neumoegen's collection, I 

 have one from the *Godbout river, in the Gulf of St. Lawrence, and one 

 from Nepigon, and all these are yellow, and I do not remember having 

 ever seen a white one, though it is possible I may have done so. Dr. 

 Bethune has informed me that he took a good many at Nepigon, and all 

 were yellow. Mr. Fletcher wrote me that he had taken 18 ? 9 fit 

 Nepigon, and of these 11 were of what he calls the pallid form, and 3 at 



*The man who collected for Mr. Couper at this locality was named Comeau, not 

 Corneau, as printed in the Can, Ent, 



