The eggs of the six lots were kept apart and as the larvæ hatched (at from 14 to 28 days from deposition, depending on the temperature), they were placed on sods in separate pots and left in the coolest room in my house. But some of the Illinois eggs were sent to Mr. C. P. Whitney, at Milford, N. H., who offered to put them on ice. I wished to try the effect of cold in retarding the hatching. Early in February I received the boxes again and found a number of healthy larvæ, with a few unbroken eggs. These last proved to be dead. The eggs had been sent in a paper pill box which was within a flat tin box, and this was set directly on the ice. The young larvæ when I received them were fixed to the rough sides of their box and had not been attacked by mould, the enemy most to be dreaded. Mr. Whitney wrote that he was notified in December that the ice-house was empty, and he thereupon removed the tin box without opening it, and placed it in a snow bank, where it remained till I sent for it. The larvæ may have been emerging from the eggs when he first received them, or perhaps did so in the interval between ice-house and snow. This method of keeping larvæ which become lethargic immediately upon leaving the egg will probably be found successful with all species of butterflies which have that habit—as the large Argynnids—and make it possible to breed them in numbers. I have been unable to find any other mode of wintering such larvæ without a certain loss of most of them. On 23rd Jan., 1879, I transferred such of the Satyrid larvæ as were living (and this included some of each lot) to fresh sods, and 28th Jan. noticed that several were feeding. One Hunter _Nephele_ passed 1st moult 23rd Feb’y, and before 4th March several of the same lot had passed the moult. But the Illinois _Nephele_ and all _Alope_ lingered. One Coalburgh _Alope_ and one from Hoboken passed 1st moult 7th March, by which date the Hunter _Nephele_ spoken of was swollen for 2nd moult, which it passed two days later. Two Illinois _Nephele_ passed 1st moult 8th March. To the end some of the Hunter _Nephele_ were in advance of all, and some of the Illinois examples lingered behind all. The stages of Coalburgh _Alope_ were as follows: 1st moult passed 7th March. 2nd ” ” 21st ” 1st to 2nd—14 days. 3rd ” ” 14th April. 2nd to 3rd—24 ” 4th ” ” 2nd May. 3rd to 4th—18 ” In chrysalis 26th ” 4th to chrys.—24 ” Imago issued 9th June. chr. to imago—14 ” Of Hunter _Nephele_ I find no notes, but in 1877 the stages were 1st moult to 2nd—23 days. 2nd ” to 3rd—14 ” 3rd ” to 4th—14 ” 4th ” to chrys.—28 ” Chrys. to imago—14 ” Of Illinois _Nephele_ the stages were: