THE CANADIAN ENTOMOLOGIST. 151 



from 14 to 18 days. I have found no evidence that these larvae feed on 

 any other plant than Chelone glabra, though, as I have said, the webs are 

 built on other plants. 



Phyciodes nycteis Doubleday. 



I have sometimes confounded this species with P. Harrisii, and I see 

 that in vol. iv, Can. Ent., p. 237, I made this error. The larvae of 

 nycteis feed on Actinomeris squarrosa, as was correctly stated by me in 

 vol. v, p. 224. I then described the fall brood of nycteis, all of which 

 hybernated after the third moult, and revived the following spring. This 

 season I have raised an early brood from the eggs, and about one-third of 

 the larvae went on to chrysalis, while the remainder became lethargic after 

 the third moult. 



The chrysalis of this species varies much. Some are light-coloured, 

 nearly white, with delicate blackish spots and fine streaks of brown over 

 the surface ; others are almost wholly black, while others again are between 

 the two extremes. The length of the chrysalis is one-half inch, and the 

 shape very nearly that of phaeton. 



Argynnis idalia. 



Mr. G. M. Dodge sent me last fall, from Nebraska, several eggs of 

 this species, and I succeeded in carrying a few of the larvae through the 

 winter, and one of them past the fifth moult, but this one died before 

 chrysalis. The eggs are congeneric in shape with those of cybele, aphro- 

 dite and diana, and the larvae are of the same character as in those 

 species. In the first two stages the larvae, indeed, are scarcely 

 distinguishable in any respect from those of diana. After this, instead 

 of the color being black or brown, as in the three species named, they are 

 prettily ornamented with light stripes ; but the spines and the arrange- 

 ment of them are just as in the others. The food plant was common 

 violet, or cultivated violets or pansies, indifferently. I raised quite a 

 number of larvae of cybele last winter, and with perfect success. Instead 

 of enclosing them in glasses, a process which proved disastrous to the 

 Argy finis larvae which I attempted to raise in '73-74, I covered the 

 plants with wire gauze cylinders. These admitted plenty of air, and I 

 had only to see that fresh leaves were supplied. 



