64 THK CANADIAN ENTOMOLOGIP''". 



DESCRIPTION OF THE PREPARATORY STAGES OF 



NEONVMPHA CANTHUS, Linn. (EXCEPT 



THE CHRYSALIS.) 



liV \V. H. EinVAKDS, COALBUkOH, \V. VA. 



Egg. — Sub-rotund, broadest at base, and there flattened ; surface 

 slightly rough, but without definite markings under a pretty high power ; 

 color greenish-white. Duration of tliis stage about 7 days. 



Young Larva. — Length just from egg. .09 inch; color yellow-white; 

 but in a few hours changes to pale green : shape cylindrical, long, slender; 

 the last segment blimtly bifiu-cated ; on each segment a few tubercles, each 

 of which gives out a clubbed white hair ; head, at first, nearly twice as 

 broad as 2, obovoid, truncated and depressed; on each vertex a small 

 rounded prominence, indented at top, and from the middle of the hollow 

 rises a little tubercle, with a bristle ; color light brown ; the surface shal- 

 lowly pitted, and sparsely pilose ; ocelli reddish brown. 



At three days from the egg, length .18 inch; color pale green; on 

 either side now appear three whitisli longitudinal lines, one near middle 

 of dorstmi, one on the verge of the dorsal area, and one on middle of the 

 side. As the first moult approac:hes. the body becomes broad as the 

 head, and vitreous-green, with the white lines as before described. To 

 first moult about 8 days. 



After First Moult. — Length .26 inch : slender, slightly thickest in mid- 

 dle segments ; the tails longer in proportion than at first stage, slender, 

 sub-conical, pink-tipped, rough witli white pointed tubercles and short 

 bristles ; each segment several times creased transversely, and on the 

 ridges so caused are fine white tubercles, with short hair to each : color at 

 first greenish-yellow, afterwards changing to pale green ; on middle of 

 dorsum a dark green stripe, free from tubercles ; on either edge of this a 

 line of white tubercles, another sub-dorsal, a third along base ; between 

 the last two are two other fine white lines, and one such between the dor- 

 sal and sulj-dorsal ; feet and legs green ; head broader than next seg- 

 ment, obovoid, the sides more slojiing. less rounded, than in first stage ; 

 on each vertex a long, tapering process or horn, tuberculated, brown- 

 tipped, and marked in front l)y a reddisli stripe which is extended do^vn 



