Vol. XXlV] ENTOMOLOGICAL NEWS. 27 



Strange to say the black male of pseudargiolus is found in about 

 the same territory as glaucus and this would make one think 

 that it was also climatic in origin. The comparative absence 

 of glaucus in the mountains and also north of latitude 43 would 

 also indicate a climatic influence. 



What is the cause of the extraordinary antigeny seen in 

 Neophasia terlooti? The male in this species is white and the 

 female orange. The female of the species was once sent to me 

 as a "little Danais" and it really looks like one. Here would 

 be a good opportunity to build up a mimicry theory. Who 

 can tell the true meaning of antigeny among insects? There 

 has not been put forth a single explanation that has stood any 

 logical analysis. In regard to the black male of Lycaena pseu- 

 dargiolus one would think that if it were produced by mimicry 

 and so wonderfully protected that it would be more plentiful 

 in the range of the species where it is found. 



If the mimetic origin of antigenetic species accounts for 

 them it would seem logical to think that in time all species will 

 become dimorphic. At present, however, I see no reason for 

 believing that the antigenetic species have any advantage over 

 those having similar appearing sexes. The females are pro- 

 tected by the great difference of habit in many of them. This 

 is shown in Ornithoptera brookeana, in many species of Ar- 

 gynnis, and in other butterflies. This is also well illustrated 

 in our collections where the males of species of butterflies 

 greatly outnumber the females. This comes from the differ- 

 ence in habit of the females. Is it logically correct to build up 

 mimicry theories to explain antigeny in a few butterflies and 

 ignore equally as well marked cases of antigeny in other 

 species ? 



Change of Address. 



Prof. C. F. Baker, of the Department of Biology of Pomona College, 

 has resigned to accept a professorship in the University of the Phil- 

 ippines. He will be located at the College of Agriculture Los Banos, 

 Philippine Islands. He is accompanied by his Cuban collector, Julian 

 Valdez. 



