— 26 — 



tluced by the larva, described by Mr. Saunders in Can. Ent. I, 20, and 

 figured by Stretch in his Zyg. and Bomb., pi. IX, f. 4, as typical of 

 leconlei. 



Canadian Entomologists have very generally contended that there 

 were several species confused under the term leconlei. Mr. Caulfield i-ays 

 in the i6th Rept. Ent. Soc. Ont. , p. T,'i : "I am satisfied however that 

 breeding the larva will in time prove that we have three white winged 

 species — Leconlei, contigua, and the smaller form which now does duty as 

 Lecofiiei." Mr Caulfield is right, but he also mistakes the type o{ leconlei 

 which is the smaller, darker form, while, what he calls leconlei h the spe- 

 cies here described as new. 



Mr. Stretch has also mistaken the type o{ leconlei, considering it the 

 same as mililaris Harr. , from which it diffei"s throughout, and he describes 

 as C. 7-eversa (Ent. Am. I, 104), three distinct species including the 

 present form, conligua, and the typical leconlei. I have therefore cited his 

 name as a synonym, the description having no type. 



In a paper for the Proc. U. S. Nat'l Mus. I have monographed the 

 genus and carefully pointed out the differences between the species. 



I^DiTOR " Entomologica Americana. " 



I notice in your "Society News", April Number, it is stated that 

 "Mr. Weeks read a paper upon the effect of the weather upon the 

 einerging of insects from pupae, and their ability to control the time of 

 emergence. '' 



In connection with this, I wish to relate an experience, which seems 

 to me very much out of the line of what is ordinary. 



Last month, that is early in March, I found a cocoon of Allacus 

 Cecropia, in an e.\j)osed part of a field, on a day when the weather was 

 extremely cold, about 2 to 4 degrees above zero. I placed the cocoon in 

 a box in a warm room about 7 o'clock in the evening. The next morning 

 the perfect insect emerged. There is no doubt that the insect came from 

 this particular cocoon. 



In the same box I have some Prometheus cocoons, which have re- 

 mained there since March 1886. At that time I found 40 or 50 cocoons. 

 About 25 of them came out by the loth of June, 1886. After that, none 

 emerged until December, since which 2 or 3 have emerged each month. 

 Those that are left seem to be alive and well. J. H. Werum. 



