THE CANADIAN ENTOMOLOGIST. 245 



DESCRIPTION OF THE PREPARATORY STAGES OF 

 PHOLISORA CATULLUS, Fabricius. 



BY W. H. EDWARDS, COALEURGH, W. VA. 



EGG. — Conical, the base flat, the top truncated, rounded, and divided 

 from centre outward into eight or nine rounded, nearly equal, smooth 

 lobes; at the micropyle a deep depression; sides marked by about 15 

 vertical ribs, low, rounded ; the spaces between the ribs a httle excavated, 

 and crossed horizontally by many fine stride ; color pale yellow-brown, 

 or luteous. Duration of this stage about five days. 



YOUNG LARV^. — At 12 hours from egg, length .04 inch; slender, 

 the middle segments somewhat thickest ; color green-orange, under side 

 green-yellow, as are the feet and legs ; segment 2 is whitish, with a black 

 chitinous dorsal collar in front ; head sub-globose, black-brown, shining. 

 Duration of this stage three days. 



After first moult : — Length, at 12 hours, .12 inch; shape as before ; 

 color yellow-green, thickly covered with minute yellow points, each of 

 which gives out a short fine whitish hair ; the collar on 2 black ; head 

 sub-cordate, roughened, black-brown, with a covering of fine down. 

 Duration of this stage three days. 



After second moult : — Length, at 12 hours, .16 inch; shape as before ; 

 color same ; head as before. To next moult three days. 



After third moult : — Length, at 24 hours, .42 inch ; stout, of nearly 

 even thickness from 4 to 12 ; color yellow-green, with tubercles and hairs 

 as in previous stages ; head as before. To next moult two or three days. 



After fourth moult : — At 12 hours, length .6 inch. Three days later, 



MATURE LARVA.— Length .7 inch, greatest breadth .16 inch; 

 obese, a little thickest in middle segments, but very stout from 4 to 12 ; 

 color yellow-green, thickly covered with fine flattened tuberculations, of 

 irregular sizes, whitish, each giving out a fine short white hair, whereby 

 the surface is downy ; a faint sub-dorsal yellow stripe on either side ; 

 under side, feet and legs, more green ; segment 2 has a narrow black 

 chitmous dorsal collar, cleft at summit ; rest of 2 whitish ; head sub- 

 cordate, rough, black-brown, covered with fine down as the body. From 

 fourth moult to chrysalis seven days. 



Some larvae in last stage have no trace of the sub-dorsal stripes ; and 

 in some the color is brownish-green. 



Chrysalis. — Length .52 inch, greatest breadth .14 inch ; cylindrical, 



