3:j0 THE CA.NA.DIA.N ENTOMOLOGIST. 



Cryptoleon, new genus. 



Antennae about as long as head and prothorax ; pronotum rather 

 narrow ; legs rather short and not slender, no spurs, anterior tarsus about 

 as long as the tibia ; last joint or' labial palpi but little swollen. Two or 

 four crossveins before origin of radial sector ; first branch of radial sector 

 arises much before the end of anal vein ; costals in a single or double 

 series ; in the hind wings the cubital fork runs parallel to the anal vein 

 for some distance. 



Type, Myrmeleon conspersus Rambr. 



CURIOUS EFFECT OF THE ATTACK OF AN ASILUS FLY 



ON COLIAS PHILODICE. 



BY ALBERT F. WINN, WESTMOUNT, P. Q. 



During the last week of my holidays at Biddeford, Maine, this sum- 

 mer, Colias philodice was abundant and in fine condition, and a great 

 many were taken, in the hope that among them there might be some C. 

 interior, but none of this species were found. 



On July 19th, however, I noticed on the wing a yellow butterfly 

 whose flight was most peculiar, and on capturing it, it proved to be a 9 



philodice in the clutches of a robber-fly (Asilus sp.). Both were 



immediately put in the cyanide bottle, and about an hour later were 

 folded up in the same paper, and the butterfly was not noticed as being 

 in any way different from the usual well-known colour, but on the 

 evening of July 24th, while looking over my captures with Mr. Chagnon. I 

 came across these two specimens, and, to my surprise, the under side of the 

 philodice was, by electric light, of a pale greenish colour. I was still 

 further astonished to find that it was quite soft, although it had been in 

 paper for six days, and all my other specimens were dry. I spread it, 

 without relaxing, and it was duly taken off the boards to show to Mr. 

 Lyman, who, I knew, would be interested in anything odd in the way of 

 a Colias. 



About a week later Mr. Lyman brought it back to me, remarking 

 that " it was very curious that the colour of the under side should have 

 become that greenish colour, by artificial light, and that / had better 

 spread it properly. I thought I had done this already, but a slight breath 

 closed its wings over its back and another flattened them out again. 

 Three weeks more were given it on the setting-board, and it was still soft, 



