ARGYNxNIS XL 



to the ridge at summit, the sides bevelled ; mesonotum moderately prominent, 

 rounded, carinated ; followed by a deep rounded depression ; the wing cases with 

 prominent conical processes at base, much elevated above surface of body, the 

 outer edges flaring, the middle part depressed ; on the abdomen two rows of 

 small tubercles corresponding to the dorsal spines of the larva, and which extend 

 to the head case ; one row of minute tubercles on each side ; the whole surface 

 finely corrugated ; color variable, being sometimes glossy dark brown, with a 

 fine mottling of reddish-orange, not distinct, over wing cases and anterior parts ; 

 or dark brown mottled with drab, this last prevailing on the wing cases ; or dark 

 brown mottled with lighter brown, most distinctly light at margins of wing cases, 

 where they pass down to surface; or almost wholly dead-leaf brown, a little 

 obscure on wing cases ; the anterior abdominal tubeicles usually black in front, 

 yellow behind, the posterior tubercles wholly black. (Fig. i.) Duration of this 

 stage sixteen to twenty days. 



In the text to Argynnis Diana, page 147, Volume II, 1876, I gave a general 

 account of raising larva3 of Cyhele from egg. In the Canadian Entomologist. 

 XII, p. 143, 1880, I gave farther observations, and related that up to the preced- 

 ing winter I had always lost most of the larvaj of this species, as well as Diana 

 and Aphrodite. They died off during the winter, or during the stages in spring, 

 or in chrysalis, and I had been unable to contrive any successful mode of 

 carrying the larvee through. But, in fall of 1879, it occurred to me that freez- 

 ing them solid might be the proper thing, and I sent several larva? of Cyhele 

 to Professor Fernald, then at Orono, Maine, to be placed in his ice-house. They 

 were in small paper pill-boxes, the unglazed sides of which afforded foothold. 

 These were put in a flat tin box and deposited in frozen sawdust under the ice, as 

 Professor Fernald informed me. Five months later, on 5th March, 1880, I re- 

 ceived the boxes by mail. The larva? were nearly all alive, and when first seen, 

 several showed some movement, though only three days from the ice. Others 

 were lethargic some houi's longer, but next day all had left the boxes and be- 

 taken themselves to the plants of violet among which I had laid them. They 

 crawled to the stems and down to the bases in the hollows, and there rested 

 when not feeding. On 10th March, one was found to have passed the first 

 moult, several days in advance of any other, and this one continued in advance 

 to maturity, passing second moult 18th, third 27th, fourth 4th April, fifth Pith, 

 suspended 23d, pupated 24th April, and gave a female imago 14th May. The 

 whole period from ice to imago was seventy-three days. The other larvto passed 

 first moult 19th March, second 29th March to 2d April, third from 4th to 6th 



