Clje Canadian fctomologist. 



VOL. XIII. LONDON, ONT., APRIL, 1881. No. 4 



DESCRIPTION OF THE PREPARATORY STAGES OF 

 TERIAS NICIPPE, Cramer. 



BY W. H. EDWARDS, COALBURGH, W. VA. 



EGG. — Long, narrow, fusiform, thickest in the middle, tapering about 

 equally to either end ; the two ends nearly equal, small, blunt, the upper 

 one rounded ; the sides marked by many low, narrow, longitudinal ribs, 

 about 30 in number ; in shape much resembles egg of Colias Philodice, 

 but the ribs are more numerous and less prominent, and there are no cross 

 striae. Color, when first laid, greenish-yellow ; after a {t\N hours turning 

 to red. Duration of this stage in midsummer 2 to 3 days. 



YOUNG LARVA. — Length .6 inch ; cylindrical, nearly even, each 

 segment at its anterior end a little smaller than the posterior end of the 

 next preceding ; color whitish, semi-translucent ; a few whitish clubbed 

 appendages scattered about each segment ; legs and feet color of body ; 

 head a little broader than 2, obovoid, greenish-white. To ist moult in 

 July 2 to 3 days. 



After ist Moult. — Length .16 inch ; slender, even, head as broad as 2; 

 color of body deep green ; dorsum, the sides and lower parts lighter; each 

 segment transversely crossed four or five times, and on the ridges so caused 

 fine tubercles, some of which put out short clubbed white appendages, 

 others short hairs, white or black ; head sub-globose, finely tuberculated 

 and somewhat pilose ; yellow-green. To next moult in July 2 days. 



After 2nd Moult. — Length .2 inch ; same shape ; color wholly deep 

 green ; head as before, lighter green than body. To next moult in July 

 2 days. 



After 3rd Moult. — Length .4 to .5 inch ; same shape; deep green ; a 

 darker green vascular medio-dorsal line, the basal ridge pale green from 2 

 to 13 ; head as at preceding stage. To next moult 2 days. 



