66 THE CANADIAN ENTOMOLOGIST. 



Stage 30 days. After fifth moult, length i inch ; color green, striped with 

 whitish. Twelve days later reached maturity. 



Mature Larva. — Length 1.2 inch; long, slender, the dorsum arched ; 

 the last segment ending in two long, slender, conical tails, which are rough 

 with tubercles ; each segment creased transversely so as to make six 

 ridges ; the front ridge, from 3 back, is twice as broad as any other, and 

 flattened, the rest nearly equal, rounded ; the surface finely tuberculated, 

 each tubercle giving out a fine and short hair ; color of body green ; a 

 darker medio-dorsal stripe, and on either side of this a pale green band on 

 the outer edge of which is a yellow-green stripe : these stripes and bands 

 occupy the whole dorsal area ; on the side a pale green band through 

 which runs a yellow line ; along base a yellow stripe ; feet and legs pale 

 green ; head obovoid. the top narrow, and on each vertex a long, tapering, 

 conical process or horn, the two meeting at base ; whole surface rough 

 with fine tubercles, each with short hair ; color of head yellow-green, the 

 horns red ; down the front of the latter from near the tip a brown stripe, 

 which passes down the side of face to the ocelli. 



The only larva 1 have been able to raise to maturity died before chry- 

 salis, so that I am not at present able to describe that stage. 



Canthus does not tiy in A\'. A'a., and I was indebted to Mr. Chas. E. 

 Worthington, of Chicago, for the first eggs and larva; I obtained. The 

 eggs were laid by females tied in a bag over grass, nth to 13th July, 1879. 

 \Mien they reached me, 2ot]i, by mail, some eggs were still unhatched. In 

 all there had been about 50. They were laid on a species of coarse grass 

 growing near the border of Lake Michigan, but the larvae eat lawn grass 

 readily. The first moult was passed 27th July; the second 2nd Aug., the 

 third 1 6th Aug.: but at each stage some larvie lagged behind, so that the 

 third moult came on at various dates up to 2nd Sept. I'he color of all 

 the larvte was green till after third moult, when the first which had passed 

 that moult, within 24 hours after it. changed to buff and brown, and 31st 

 Aug., these were evidently fixed fur hybernation. But two which passed 

 the moult latest went on to fourth moult, one of them having changed to 

 luiff like those first mentioned, and passed fourth on 19th Sept., the other 

 retaining its original color. This last passed tburth on 17th Sept., and 

 about 24 hours after, it also had changed to buff ( )ne of these escaped, 

 and the other went into hybernation, but died during the winter. I lost 

 indeed all the larv;v of the brood. 



