26 ENTOMOLOGICAL NEWS. [Jan., '13 



agreeable scent of philenor is disputed by Scudder. It is in- 

 teresting to know that Mr. Mead suggested this theory at 

 that time. Mr. Edwards accounts for the scarcity of yellow 

 females in West Virginia as due to the influence of birds. 



He also says, however, that the yellow females are more 

 numerous than the black in Georgia and Florida. Attention 

 is also called to the fact that in certain places in the moun- 

 tains of the south the black females are not found. 



Jeheber* believes that glaucus is the result of the larva feed- 

 ing on "diseased food, the leaves being sprinkled over with fine 

 black spots and completely covered with a gummy substance." 

 While this seems unlikely it has not been disproved. 



Turnus is found from the Gulf of Mexico to the latitude 

 of the Yukon River in Alaska and possibly still further north. 

 If we consider the topomorph rutulus as the same species, and 

 I believe it is, the species also flies from the Atlantic to the 

 Pacific Ocean. The evidence in favor of glaucus being brought 

 about by mimicry is almost nil, while the evidence against it 

 is very considerable. The species swarms in countless thou- 

 sands in the north where glaucus does not exist. In early 

 July along the line of the Canadian Pacific Railway, in On- 

 tario, I have seen the species in immense numbers, far more 

 plentiful than I have ever observed it in the south where 

 glaucus is found. The species shows a remarkable instance 

 of trimorphism, but there are a number of cases of like char- 

 acter in butterflies and other insects. 



As mentioned above Pamphila hohomok is an exact counter- 

 part of turnus in this respect. The male is tawny and there 

 is a female like the male in appearance and another female that 

 is black or dark brown, and analogous to the dimorphic glaucus. 

 There is still another remarkable example of antigeny in Ly- 

 caena pscudargiolus, but in this case the males are diflferent in 

 appearance, the one being blue and the other black. This is 

 the only instance I recall of the males being dimorphic unless 

 it be in the black male of Colias philodice that rarely occurs. 



*Ent. News. Vol. 16, p. iii, 1905. 



