52 • THE CANADIAN ENTOMOLOGIST. 



ft 

 and 29 days. On the other hand, I have had eggs of Alope and Nephele 

 from several locaUties, and the periods of this stage have run from 14 to 

 28 days. It depends much on the weather how long the egg period shall 

 be, whether it be a Satyrus or Argynnis egg, and it is hardly right to 

 charge the females of Alope with special indolence of habit. Their eggs 

 are laid, so far as my observation goes, as soon after emergence of the 

 female from chrysalis, as are the eggs of the larger Argynnids, and hatch 

 as speedily. 



II. On Eggs of Thecla Calanus. 



It is stated, 1. c, page 128, that the eggs of Calanus " are laid towards 

 end of July and early in August; these eggs remaiji unhatched jmtil the 

 folltnving spring, when the caterpillar emerges, feeds on oak leaves, 

 changes to chrysahs in June and July, and after a fortnight the butterflies 

 of the new year appear." I should much like to see evidence to support 

 this statement. Mr. Saunders, at London, Canada, Can. Ent., vol. i, p. 

 57, says of this species, which he calls by its synonym T. inorata G. & R. 

 ( = T. Falacer B. & L. ) : " About the middle of July, 1868, two eggs were 

 deposited on the sides of a pill box. This box was overlooked for several 

 days, and when examined again, the larvae were found to have escaped and 

 dried up for want of food." 



Mr. C. E. Worthington, at Chicago, writes me : " I took examples of 

 Calanus the last days of June, and confined on a branch of oak. The 

 eggs were laid, and hatched during the first week in July, and the larvae 

 died a few days after. Calanus is our commonest species. My memor- 

 anda of captures are June, July, September." 



It is certain then that Calanus eggs laid in June and July hatch in a 

 few days, in Canada and Illinois, and that in the latter the species is 

 double-brooded. If eggs are laid in September, they may possibly hiber- 

 nate, or the caterpillars may, or the chrysalis, and to this date apparently 

 no one knows which of these stages hibernates. My opinion is that it is 

 the chrysalis, as with other American species of this genus. 



12. On the. Number of Larval Segments. 



Authors have recognized 1 3 segments, counting the head as one (tnde 

 Burmeister, Westwood, iScc. ) Mr. Scudder, page 17, says : "The body, 

 or the portion of the caterpillar lying back of the head, is composed of 

 thirteen segments." I find no explanation of this thirteenth segment, nor 



