112 Kansas Academy of Science. 



Moths emerge late the following summer, July 1st to 15th; and after pairing, de- 

 posit eggs in compact groups of 10 to 50 on the lower surface of oak leaves. 



Larvas appear eight or nine days after the eggs are deposited; and, before reach- 

 ing maturity, moult or shed their skins four times. The first moult occurs after a 

 feeding period of about five days, the second to the fourth after eight to ten days, 

 and about nine days elapse after the fourth moult before they become full-fed and 

 enter the soil. 



The following is a record of a cluster of eggs deposited on a leaf of Quevcus ijvinos 

 July 11th, 1888: 



July 20, larvae. 



August 4-5, first moult. 



August 12-13, second moult. 



August 20-21, third moult. 



August 30-31, fourth moult. 



September 9-11, full-fed. 



September 14-16, pupte. 



DESCBIPTIONS OF EAKLV STAGES. 



Egg: Yellowish; oval flattened, 1.7x1.5x1 mm.; apparently smooth, shining; under 

 high power marked with indistinct polygonal raised sculpturing?. Before hatching, 

 the brownish head outline of the body, location of spines, etc., of the larva are vis- 

 ible. 



Young larva: Length, 3.5 mm.; head, large, .8 mm. wide, 1 mm. long, reddish 

 brown; thoracic and anal plate, large plates on anal prolegs, tubercles and spines, 

 dark reddish brown; general body color, yellowish. The body is armed with hairs 

 and spines as follows: Two large spines 1 mm. long, forked at the apex on the 

 dorsum of the 2d segment; below these on either side is a two-forked spine, and a 

 substigmatal twin spine; spine on 3d segment the same, but the dorsal spines are not 

 larger than the others; on the following segments the dorsal and subdorsal spines 

 are one-pronged, and a small spine or hair appears below and posterior to each of 

 the dorsal spines; on the 11th segment, one central dorsal two-forked spine is 

 found; head, thoracic and anal plates, armed with hairs (or spines). Stigmata, light 

 brown. 



Larva after first moult: Length, 10 mm.; spines on second segment 2.3 mm. long, 

 not muqh forked; spines of body relatively shorter; all spines tuberculate, tubercles 

 bearing minute hairs; color of spines, bluish black; of head and body, reddish; the 

 latter yellowish above, and marked with a subdorsal yellowish stripe; stigmata, black; 

 feet and plates on prolegs, dark. 



Larva after second moult: Length, 12 mm.; spines on second segment, 4.5 mm.; 

 body colors darker than in previous stage; a wide, brownish dorsal stripe, including 

 the two dorsal spines on each segment, extends from the second segment to the 

 middle of the last; this stripe is bordered with a lighter or yellowish color, which 

 becomes darker gradually to the dark-brown stigmatal area; below the stigmata, 

 light brown; a few whitish granules or minute tubercles are found on the anterior 

 edge of the first segment, and on the spines. 



Larva after the third moult: Length, 16 mm.; spines on second segment, 7 mm.; 

 tubercles on spines, and on segments, especially on anterior edge of first and pos- 

 terior edge of last, white; colors as previously noted. 



After the fourth moult: Length, 30 mm; full-fed, 40-45 mm.; spines on second 

 segment, 6.5 mm. long, ends rounded, not two-pointed; white tubercles on spines 

 and body quite prominent; a prominent transverse row on anterior and posterior 

 edge of abdominal segments, and smaller ones scattered over the general surface; 



