THE CANADIAN ENTOMOLOGIST. 165 



In 1882, I carried three larvae to chrysalis, and all passed but three 

 moults. I received these larvae from Dr. Wm. Wittfeld, Indian River, 

 Fla., 17th July. He mailed the eggs nth July, and had obtained them 

 by confining a female over grass. When the larvse reached me they were 

 in their first stage, and the 



1 St moult was passed 20th July, 

 2nd " " 29th " 

 3rd " " 5th Aug. 



2 larvae suspended i6th " 

 They pupated 17th " 

 A third '• 20th " 

 Imago from last chr. ( ^ ) 30th Aug. 



(The other chrysalids I put in alcohul.) 



But Mrs. Peart carried one larva to chrysalis, and it passed 4 moults. 

 This came from 



Egg laid 7th May, 1882. 



Egg hatched 12 th " 

 ist moult 2nd June. 



2nd " 15th " 



3rd " 3rd July. 



4th " isth " 



In chr. 28th " 



I have the casts of the face of this larva, which so passed 4 moults, 

 and can compare them with casts from the larvae raised by myself, calling 

 the former A, the latter B : 



A. — Diameter of head at 2nd moult, 



" " 3rd " 



" 4th " 



" " chry. 



So that A and B were alike at 2nd moult ; B at 3rd was between 3rd and 



4th of A, and at pupation was smaller than A. In fact the larva which 



passed 4 moults was larger than either of mine, and the chrysalis from it 



measured .54 inch in length, against .48 in the other case. This chrysalis 



failed to give an imago, but probably it was a female, and it is possible 



that the difference in number of moults may be sexual. 



I have had great difficulty in bringing larvae of Areolatus to maturity, 

 and I may say the same of N. Canthus, and in repeated instances have 

 failed when feeding them on lawn grass. The eggs of both species are 



