THE CANADIAN ENTOMOLOGIST. 105 



or pinkish brown, the brown ones being as numerous as the green. They 

 are pecuHarly liable to the attack of parasites, and out of nearly fifty 

 specimens secured in 1884, only nine or ten came to maturity as perfect 

 moths. The rest fell a prey to a species of Pezoviachics. 



Triptogoji Occidentalism Hy. Edwards. 



This is a western variety of T. Modesta, Harr., differing from the type- 

 form simply in being generally larger in size and paler in color. Modesta 

 is found in Western Pennsylvania, Ohio, and Southern Indiana. The 

 examples of Modesta from S. Indiana are hardly to be distinguished from 

 specimens of Occidentalis from Colorado. 



Cressonia Juglandis, Ab. & S. 



The larva of this species is commonly found in Western Pennsylvania 

 and Southern Indiana. 



PREPARATORY STAGES OF TETRACIS TRIANGULIFERATA, 



Pack. 



by g. h. french, carbondale, ill. 



Egg. — Elongate or oval, .03 of an inch long by .025 of an inch wide, 

 ribbed longitudinally like a muskmelon by about 1 5 ribs ; color pale yel- 

 lowish green; Duration of this period 8 days. 



Young Larva. — Length .10 of an inch; cylindrical, with 10 legs; 

 grayish white, without marks except a bright scarlet transverse line across 

 the posterior part of joint 2, jaws the same color, legs concolorous, the 

 six thoracic slightly pink tinted. Duration of this period 6 to 7 days. 



After First Moult. — Length .30 of an inch; shape as before ; dorsum 

 dark purplish gray, paler in some ; on each side a row of five short 

 streaks, slightly lunate, bordered outside with paler, those at the incisures 

 between the joints pale, on each side of joints 8 and 9 a blackish purple 

 patch, the first the largest ; venter with one pale and two dark stripes and 

 some spots ; head as before. Some examples have the dorsum pale green 

 with a gray shading. Duration of this period 5 days. 



After Second Moult. — Length .50 of an inch ; cylindrical, near the 

 posterior part of each of joints 6 to 10 are four slight elevations in a 



