238 THE CANADIAN ENTOMOLOGIST. 



form in all had emerged, but as yet no marcellas or intermediate form 

 After that date a few telamonides appeared at intervals up to 20th Sept., but 

 a large proportion of the butterflies, namely, twelve out of twenty-six, 

 between the 4th and 15 th were intermediate between telamonides and 

 marcellas, some approaching one, some the other more nearly. On 4th 

 Sept. the first examples wholly marcellus appeared, and one followed on 

 each day, the 6th, 8th, 13th and 15th ; from the 15th to the 3rd of Oct. 

 six out of ten were marcellus, and two intermediate ; a single example 

 between telamonides and Walshii appeared 3rd Sept., in which the tails 

 were white tipped as in Walshii, but in size and other characters it was 

 telamonides, though the crimson band might have belonged to either form. 

 Up to the 20th Sept', one or more butterflies emerged daily, on one day, 

 the 4th, eleven ; after the 20th single individuals appeared at intervals of 

 from four to six days, and the last was on 16th Oct. So that the whole 

 period of emerging after the box was brought from the ice house was 57 

 days, and it had commenced some time before that occurred. The 

 natural duration of the chrysalis state in such examples of ajax as emerge 

 the first season is only about fourteen days, but in very rare instances in 

 my experience single individuals have emerged after a period of from four 

 to six weeks. In all, 50 butterflies emerged between the 20th August and 

 8th October, divided as follows : 



Telamonides 22. 



Between Telamonides and Walshii 1. 



Between Telamonides and Marcellus, and nearest the former 7. 

 Between Telamonides and Marcellus, and nearest the latter.. 9. 

 Marcellus , 11. 



Great uniformity is observable in the size of all these butterflies, their 

 average being that of the ordinary telamonides. The examples of telam- 

 onides especially are strongly marked, the crimson band in a large propor- 

 tion of them being as conspicuous as is usual in Walshii, and the blue 

 lunules near the tail are remarkably large and bright colored. Of the 

 marcellus, in addition to the somewhat reduced size, the tails are almost 

 invariably shorter than usual and narrower, and instead of the character- 

 istic single crimson spot, nearly all have two spots, often large. In all 

 these particulars they approach telamonides. 



To the telamonides which emerged after 20th Sept. must be added most 

 of the butterflies which were found dead in the box at that date, and this 

 would bring the number to nearly fifty of that form. There remain of 



