THE CANADIAN ENTOMOLOGIST. 149 



brow, the deep-set eyes, the flattened nose, the curled and open lips (the 

 white second segment.) 



The chrysalis is closely pressed to the object by the shape of its last 

 segment, but is also held by a girdle which passes over dorsum between 

 4 and 5, and is free at the upper lids of the eye-spots. 



On 22nd Sept., I found that one imago had come from chrysalis, and 

 was dead and dry. I suppose the period in this case was about 10 days. 

 The other chrysalids will hibernate. 



From laying of egg to hatching 3 and 4 days ; in one instance in 

 which Miss Morton saw the egg laid, the larva came forth at 3 days, and 

 had reached 3rd moult at 9 days, date of the letter. One egg sent me 

 hatched 29th Aug., ist moult 31st Aug., 2nd moult 3rd Sept., 3rd not 

 observed ; pupation 8 Sept. Allowing 3 days for egg period, that would 

 make 13 days from laying of egg to chrysaHs, a pace unequalled in my 

 experience. In the case of AgrauHs Vanilla, C. Ent., 12, 125, from egg 

 to pupation was 16 days, the shortest period I think recorded by me. 



The larvae, at Coalburgh, have several times been without food for 

 many hours, or two or three days, and pupation has taken place when 

 they were dwarfed from starvation. They always had plum leaves in the 

 tubes, but never eat of them. I asked Miss Morton about this, and the 

 reply 21st Sept., says : "I can answer as positively as you could wish. 

 I left in the. swamp, where I saw the first butterfly, four eggs in a bag, on 

 a limb with leaves and a small cluster of aphides. Being prevented from 

 going again for several days, I found the larvae hatched and three of them 

 gone ; not a trace of them in the bag, which I emptied on a sheet, The 

 fourth larva was still alive, but stunted and weak. Being put in with 

 fresh aphides, it eat ravenously, and finally changed to a very small pupa. 

 It certainly had not eaten of the leaves. Besides this, I have always had 

 a few leaves in the tin box with larvae and aphides, but even when the 

 latter are entirely gone, the Tarqums have never touched leaves except to 

 make their chrysalids on them. I have found that the larvae prefer 

 leaves for pupating on," 



On 24th Sept., I received from Miss Morton three larvae in 2nd, 3rd, 

 4th stages, and experimented with them amongst aphides on willow 

 and plum, all small and naked species. The ants on willow are of a small 

 species, honey-colored, those on plum of same size, but black. I laid the 

 smallest larva on willow leaf directly by a small cluster of aphides, at 

 which few ants were engaged. The larva paid no heed-to the aphides, 



