508 THE ENTOMOLOGIST. 
which towards the head appears almost fringed, and to which 
portions of the yellow petals, or rather florets, often adhere. The 
abdomen and claspers are of the same uniform stone-colour, with 
a faint indication of a double row of dark spots, two or four on 
each segment. The larva spins a few coarse threads of silk, 
drawing together portions of food-plant or moss into an open-work 
cocoon, through which can readily be seen the light brown 
chrysalis. Naturally these larvae would hybernate, which the 
rest of my brood are now doing.—W. H. Tueweut; 3, Lewisham 
Road, Greenwich, November 13, 1880. 
TREATMENT OF Hysernatinc Larvm.—Last year I referred 
to the ice-house treatment of hybernating larvee (Hntom. xii. 290), 
and knowing how difficult it is to carry many species that 
hybernate as young larve through the winter, especially amongst 
the Diurni and Bombyces, the following remarks of Mr. W. H. 
Edwards may possibly be instructive. They appeared in the 
‘Canadian Entomologist’ for August, 1880 (vol. xi1., p. 143) ;— 
“Tn ‘Can. Ent.,’ vi., p. 121 (1874), I gave a general account of 
breeding the larve of Argynnis Cybele, A. Aphrodite, and A. 
Diana. Since that date I have bred A. Cybele as well as other 
species of this group, but before 1880 I always lost the larger 
part of the larve during the winter, or they died off at their 
successive stages, or in chrysalis. I attempted to keep the larve 
after hatching, which occurs in September or October, in a cool 
room free from dampness, they being placed on stems of violets 
growing in pots. But the alternation of warm with cold weather 
during the fall and winter was unsuitable for the larve, the leaves 
dropped off, or the plants died, and there was a constant loss. 
After the survivors were brought into a warm room later in the 
winter they were not healthy, but lingered along, every stage 
being protracted, many perishing, even up to chrysalis and imago, 
or the butterflies perhaps came out crippled. In 1873, starting 
with more than three hundred young larve of A. Diana, I 
obtained but a single butterfly. From as many eggs of A. Cybele 
I got three butterflies, and of A. Aphrodite one chrysalis only, 
which died before imago. Encouraged by the results obtained 
by freezing the larve of Satyrus Alope in winter of 1878-79, 
I determined to try the effect of cold on the larve of A. Cybele, 
and availing myself of the kindly offered aid of Prof. C. H. 
Fernald, I sent a considerable number of recently-hatched larvee 
to him at Orono, Maine, to be placed in ice-house. They were 
