THE CANADIAN ENTOMOLOGIST. 206 



instance, and one only, I have seen an Umbivsa early in the year, which 

 must have hybernated. The only hybernating female I have been able to 

 breed from was Fabricii, from which I got eggs, 28th April, 1877. The 

 result on and just before 4th June was 21 butterflies, all Umbrosa, the first 

 brood of the year. Eggs laid by the females of Umbrosa of the first 

 brood have repeatedly produced a mixed brood — the 2nd of the year — 

 but with a majority of individuals Umbrosa, as : 



1 1 Umbrosa to 6 Fabricii 

 26 " "no " 

 19 " "no 



14 " "no 



38 " " 16 " 



12 " "no 

 Total, 121 Umbrosa, 24 Fabricii. 



Eggs laid by the females Umbrosa of the 2nd brood have produced a 

 mixed brood, the 3rd of the year, with a larger proportion of Fabricii, as : 



63 Umbrosa to 34 Fabricii 



Total, 205 Umbrosa to 94 Fabricii. 



So that while in the 2nd brood Umbrosa has had 80 per cent, of the 

 whole product, in tlie 3rd brood the same form has had but 60 per cent. 

 Eggs laid by Umbrosa of the 3rd brood have produced Fabricii only, 

 the 4th brood, as : 



No Umbrosa, 25 Fabricii. 

 Larvae found — No " 10 " 

 No " 4 



No " 2 



No " 25 



Also I have recorded in October that no form has been seen by me but 

 Fabricii, that many were about, coming to apples in the orchard. 



