THE CANADIAN ENTOMOLOGIST. 179 



is the shortest pupal period I have observed in rearing this species. From 

 some former notes I have the following pupal periods of 15 specimens : 



[ produced the imago in 16 days. 



These were the early brood producing the imagines in July, though I 

 might say that about one-eighth of this brood, instead of hatching in 

 July, pass the winter in this state to produce imagines in the following 

 spring. The one that is mentioned above as having a pupal period of 14 

 days was deposited as an egg June 6th, and produced the imago July 

 1 6th. I can see no difference between either the larvae or the butterflies 

 of those fed on Prickly Ash and those fed on Orange leaves. 



Note. — Since writing the above the second of the two from which 

 notes were taken has produced the imago, its pupal period being 39 days. 

 The time of hatching was August loth, having a period of 65 days from 

 the depositing of the egg to the imago. This is the longest period of any 

 of the summer brood of which I have kept a record. 



MEETING OF THE SUB-SECTION OF ENTOMOLOGY OF THE 

 AMERICAN ASSOCIATION FOR THE ADVANCE- 

 MENT OF SCIENCE. 



The meeting of the American Association for the Advancement of 

 Science was held at Cincinnati, Ohio, commencing at 10 o'clock a. m. on 

 Wednesday, the 17th of August, 1881. At the conclusion of the opening 

 exercises the several Sections proceeded to organize, when the Sub-section 

 of Entomology was called to order by the President, Rev. J. G. Morris. 

 A large number of Entomologists were present, among others C. V. Riley, 

 Washington; Cyrus Thomas, Carbondale, 111.; Wm. H. Edwards, Coal- 



