36 THE CANADIAN ENTOMOLOGIST. 



The Canadian Entomologist has comments upon this butterfly in 

 several of its volumes : — 



Vol. i, p. 19. — P. thoas captured at Amherstburg, Ontario, in 1868; 

 said to be quite common there. 



Vol. 6, p. 140 (1874). — " Papilio thoas — several taken. This insect 

 was quite common in almost every clover field in that neighborhood " — a 

 locality in the county of Essex, Ontario. ..." Mr. Lowe took two 

 specimens of thoas last season on the River St. Clair, near Port 

 Lambton." 



Vol. 7, p. 181 (1875). — "Mr. Cook said that thoas had been found 

 this year at Lansing," Michigan — " that it occurred there to his knowledge 

 some three years ago, and that last season it was quite common, the larva 

 feeding on prickly ash." 



In Vol. 9, p. 160 (1S77), Mr. J. M. Denton records capture of eleven 

 P. thoas on 1st and 2nd of August, in a field near Amherstburg, Ontario. 



In Proceedings Davenport Academy Nat. Sc/., vol. 1, Mr. J. D. Putnam 

 cites occurrence of cresphontcs at Davenport, Iowa, and at Aledo, Illinois, 

 30 miles south of Davenport. 



The insect is known to have occurred in West Virginia, Kansas, Illi- 

 nois, Wisconsin, Connecticut (as above), Michigan and Ontario. 



The fullest note I have found is by Prof. F. H. Snow, in Trans. Kansas 

 Acad, of Sc/., vol. 4, p. 30 : "Common in 1873 and 1874 ; rare in 187 1, 

 1872 and 1875; feeds upon the prickly ash and the hop-tree in this 

 region — upon the orange tree in the Southern States." 



For this locality (Galena, Illinois) I have only a meagre record : — 

 1872, $ , August 15, new ; 1873, a worn specimen, Sept. 8 ; 1874, several 

 seen toward end of August. 



The record of cresphontes in Ontario seems to indicate two broods. 

 Mr. Lowe's captures in Essex County in 1874 were made between 10th 

 and 20th June, and again in 1875 he observed the butterfly in the same 

 locality between 6th and 30th June (Can. Ent., vol. 7, p. 139-40). But 

 Mr. Denton —as above cited — took eleven specimens early in August, near 

 Amherstburg. 



The foregoing references will serve to show that cresphontes is in some 

 degree habituated in the North, as regards both climate and food plants, 

 and that no special theory is required to account for the disclosure of an 

 imago in New England. 



