1893-] ENTOMOLOGICAL NEWS. 319- 



Mont., that does not differ at all on the upper side from cybele. 

 The easternmost point from which I have received leto is the 

 Yellowstone Park. A fair series of examples from the connecting 

 territory (eastern Montana, Colorado, Nebraska, etc.) I think 

 would absolutely connect these forms. I have received cybele 

 from Colorado, but probably disposed of the specimens in ex- 

 change before I thought of their value for comparative study. 

 It may be said that the females of the two forms are entirely dif- 

 ferent; this is true as a rule, but it is just this point I wish to 

 mention. I have two females of cybele that do not essentially 

 differ from the light yellow bordered females of leto, and I think 

 any of our Lepidopterists would label them leto 9 if he did not 

 know the locality where caught. One specimen is from Bing- 

 hampton, N. Y. , and the other is from Spanish River on the 

 Canadian shore of Lake Huron.* The latter was presented to- 

 me by Mrs. F. O. Herring, of Plainfield,. N. J., who also has 

 the form in her collection, and says it is common in the locality 

 where taken. I also find that the examples of leto, taken by 

 Capt. Geddes in Northwest Territory, more nearly approach cy- 

 bele than do the coast examples of leto. I think in cybele and 

 leto we probably have but one species with dimorphic females; 

 the female in the West having a cream-colored border, and irt 

 the East being generally like the male. The territory where 

 both females occur may eventually be found (if not already the 

 Spanish River locality). This dimorphism is evidently geo- 

 graphical like that of P. turnus, only instead of being divided 

 North and South like turmis, it is East and West. The latitude 

 where both females of turnus abound is that of Philadelphia. I 

 would be very glad to have any material or notes tending to> 

 confirm the relationship of cybele and leto. 



Dr. W. J. HOLLAND, of Pittsburg, Pa., is doing excellent work on the- 

 West African Heterocera, and is illustrating all the new species he de- 

 scribes by the photo-mechanical method wherever the insects are suitable 

 for this kind of work. Most of his illustrated papers have appeared in 

 "Psyche." Dr. Holland is also working on a synonymic catalogue of 

 the African Hesperidae, which promises to be a work of great value to 

 Lepidopterists. 



* Both specimens bright au-.l fresh. 



