92 THE CANADIAN ENTOMOLOGIST. 



as Idalia. Suppose I had followed the example of the lumpers and 

 Cipris had been overlooked altogether ! What gain would have accrued ? 



I will lay down another rule that is infallible in Argynnis. Each 

 species has its own style of silver spots, and there is practically no varia- 

 tion throughout the species, or in the range of it. Corojiis Behr. abounds 

 in South California, flies in all the intervening States to Montana, and in 

 Oregon and Washington, and varies as much in coloration of both sur- 

 faces as any American species. But take it where we may, the great egg- 

 shaped spots are always the same. It does not follow, though, that every 

 specimen with egg-shaped spots is therefore a Coro?iis. Cybele always 

 has silver spots of its own type ; so has Leto, so Nokoinis. In no case 

 does one of these species approach the other. In Macaria the spots are 

 at their maximum, in Chit07ie at their minimum ; yet, in the list, both are 

 put down as vars. of one other species. I would commend a careful 

 course of study in these points to the author of the paper. 



Mr. Elwes is sure that Mr. Edwards " will one day regret " having 

 " in his earlier years created a great number of synonymns." I am sorry 

 that he should be pained on my account. I am as much of a sinner in 

 my later years as in my earlier, and have within a week described two 

 species of Argynnis, which Mr. Elwes will regard as either " vars. or 

 bona sp., or trans. 2,d Zerene." "His later views, as expressed in such 

 papers as he has written on F. Napi and its vars., and in Lye. Pseudar 

 giolus, give evidence of a correct appreciation of the variation of species,'' 

 for which condescending and patronizing approval I am duly grateful. 

 But the illustration of L. Pseudargiolus is not so pat as was intended. I 

 named both L. Violacea and Negleda as species, and figured them as such 

 in Vol I., Butt. But, when eggs were got, the whole curious and com- 

 plicated relationship was made out, and these forms and several others 

 were proven to be polymorphic forms of the one species Pseudargiolus. 

 And I will venture to say I proceeded scientifically from first to last. 



With regard to P. Napi, all I attempted to do was to show how a 

 parent species could originate distinct derivative forms, and though I 

 called all JS/api, yet the derivatives, every one of them, are good and true 

 species, or dimorphic forms of species, breeding true, not intermixing, 

 and in the next edition of my Catalogue I shall put them down as such. 

 I think I can see how the derivation from a single form occurred, but the 

 derivatives are now species, and at present entirely separated from the 

 parent Napi. 



