ARGYNNIS VII. 
variety, wild or cultivated, and upon pansies, as do the larvae of Cybele and 
Aphrodite. The eggs of the three species are essentially alike, constructed on 
the same plan, and in about equal periods the larvae hatched ; namely, from 
twelve to fifteen days. After emerging, an occasional larva was noticed feeding, 
but only for a day or two, and nearly all at once attached themselves to the 
under sides of the leaves and upon the grooves of the stems, where rows of half 
a dozen were to be seen ranged one behind the other, quite to the base, and 
became dormant. There is no perceptible difference between the larvse of these 
three species at this or the next two or three stages. As it seemed necessary 
to keep the plants cool, I found great difficulty in carrying them through the 
early part of the winter, and as the leaves died off, and perhaps the whole 
plant as well, the larvae had to be transferred to others, and a great many 
ol them were lost in the process. Many also were destroyed by mould. Soon 
alter the first of January, I placed the plants in the greenhouse, and a few 
days later discovered the larvae of Cybele moving about and feeding. Two 
weeks later, on the twenty-first, those of Diana and Aphrodite were active. To 
prevent escape I confined them within glass globes set on the pots over the 
plants. But both plants and larvae suffered from the confinement, and there 
soon appeared a great mortality among the latter. But the most serious loss 
occurred from the smoking of the greenhouse with tobacco, one day in my ab¬ 
sence, the gardener having forgotten to remove my pots. From this catastrophe 
emerged about a score of Cybele , half a dozen Aphrodite , and fewer Diana. The 
growth ol all was slow, and it was the twenty-seventh of January before the first 
moult ol Cybele took place, and individuals of this species were passing this 
moult irregularly for a fortnight afterwards. The other two passed their first 
moult about the middle of February. Each species moulted five times before 
maturing, and the intervals between the several corresponding moults varied 
much in individuals, no doubt owing to the state of the weather. On sunny 
days all were active, but when the sky was clouded or weather cold they neither 
fed nor moved. 
I p to the filth moylt the three species retained a close resemblance, Cybele 
and Diana being of equal size, Aphrodite smaller and slenderer. At the fifth, 
Diana parted from the other two, increased rapidly in size, and the spines were 
longer in proportion, and radiated from a central axis like spokes from the hub 
ol a wheel. The four spines of second segment were projected horizontally for- 
v ard over the head, and the two middle ones of these were longer than any others 
on the body. In these respects Diana differed from the other species. As they 
approached maturity the number of larvae was reduced to four Cybele, two Aphro¬ 
dite, and one Diana, and how to preserve them to the end was a matter of much 
