1574 THE BUTTERFLIES OF NEW ENGLAND. 



open a little and I felt sure pupation was going to take place. This, however, was 

 not the case, and two days later the larva left the grass and spun another mat on the 

 sloping side of the lamp chimney. It now ceased to eat and the colour changed 

 gradually, all the green failing out and in ten days the body was of a yellowish cream 

 colour with white stripes. This again darkened until the ground colour was a very 

 pale brown or dove colour. The moisture which condensed on the side of the glass 

 kept the lower part of the larva's body constantly wet; but I did not like to risk re- 

 moving it as I looked for pupation at any day. After remaining still and evidently in 

 hibernation for about live weeks I found it had fallen from its mat to the ground on 

 29th October. After about a fortnight discoloured spots began to appear and I found 

 it was dead. 



Life history. The dates of capture of this butterfly indicate that it is 

 probably double brooded, at any rate along its southern boundaries. It 

 appears about the White Mountains toward the end of the first week in 

 June, emerging in scanty numbers from the 5th to the 7th. Butterflies 

 continue to be found in a fresh condition until the middle of the month, 

 when they become scarce, and how long they fly is uncertain. At Nepi- 

 gon they were found in such condition in the first week in July as to indi- 

 cate that they did not fly there before this month. Eggs were laid about 

 the 10th, hatching in less than a fortnight. These specimens, reared by 

 Mr. Fletcher, passed their first moult about the Ist of August and did not 

 attain their full size until the middle of October, when they apparently 

 went into hibernation, though the single specimen carried to this stage 

 died before the end of the month, as noted above. It is probable, there- 

 fore, that winter is passed as a mature caterpillar, which the time of ap- 

 pearance of the butterfly in the spring renders more probable. This 

 indicates certainly that as far south as Nepigon, which, however, by its 

 climate, strictly belongs to regions much farther north, there is but a 

 single brood ; but Mr. Bethune found buttei-flies at Sault St. Marie be- 

 tween August 10 and 24 in considerable abundance, which indicates that at 

 its extreme southern limits, the butterfly appears a second time upon the 

 wing. The difficulty in the case, however, is that it has never been taken 

 in the White Mountains later than June, and this is one of the southern- 

 most localities in which it occurs. 



Habits of the butterfly. This butterfly is to be found most com- 

 monly on flowers by the sides of roads, through thickets or woods, especi- 

 ally the latter, if they are open enough to let the sun enter freely. It is a 

 feeble flyer for an Hesperian, keeping only two or three inches above the 

 ground in the roadways, much like Thanaos icelus. 



At rest, the wings are held erect and almost attingent, the antennae on a 

 plane with the body, divaricate at an angle of about 135°, the curved tip 

 in the same plane with the rest ; the trunk is raised at a slight angle with 

 the siu-face of rest. 



Desiderata. Although, thanks to Mr. Fletcher's care, we now know 

 most of the early stages of this insect and the habits of the caterpillar, we 



