1893.] J-^ ' [Packard. 



essential markings of the full-fed larva are now assumed. The clypeiis 

 is dark in the centre, white on the apex and edges. The whitish gray- 

 hairs are conspicuous and nearly conceal the tiioracic and ahdominal 

 legs. The two dorsal yellowish dots on abdominal segments 8 and 

 9 are now conspicuous. The larvae feed more or less concealed under 

 and among the leaves in the breeding bo.v, and this habit per^iists through- 

 out the larval life. 



Stage 1 V. — June 15-16. Most of them had molted June 16. 



Stage //(,?). — Summer brood. Length, 4.5-5 mm. Described Au- 

 gust 6. The head is moderately large, considerably wider than the body, 

 which tapers gradually to the end. Tlie head is densely covered with 

 long slender pale hairs of the color of the head, which, like the body and 

 legs, is a greenish yellow-brown or pale snuff color. It is not easily to be 

 seen while resting on the green leaf stalk of its food plant. The head is 

 broad, full and rounded, with a median longitudinal dark-brown band, 

 ending in front in a darker spot ; the bead on each side is brown, sending 

 a point forward towards the middle of the head, and a brown band along 

 the side of the head to the ocelli, from which another brown band extends 

 across in front to the side of the clypeus, which separates it from its fellow 

 on the other side. 



The piliferous warts are minute, low, bearing several short, fine hairs, 

 so that the body is quite hirsute. Tlie lateral prothoiacic tubercles, in- 

 stead of being, as usual in the Lasiocampians, large and prominent, are in 

 tills larva scarcely larger than the others on the body. There is a faint 

 dorsal median brown line. There is a subdorsal row of thoracic and 

 abdominal piliferous tubercles, darker than the others ; also a broader, 

 darker lateral row of spots, each surrounding a broad, flat, dark, pilifer- 

 ous wart, connecting with the lateral dark band on the head. Below this 

 is a narrower, paler lateral spiracular line, enclosing the pale, inconspicu- 

 ous spiracles. The anal legs are broad and large, spreading widely. Both 

 the thoracic and abdominal legs are concolorous with the body, and are 

 densely hiiry. 



In another larva, 7 mm. in length and better fed, with the body filled 

 out, the head was no wider than the body, as in the other, but the bands 

 and spots, especially the dorsal and subdorsil ones, were more distinct 

 than before. The subdorsal tubercles are flattened and enclosed in large, 

 oblong, dark, longitudinal spots. The spiracular line is broad and more 

 distinct, and below it, directly above the base of the legs, is a series of 

 dark gibbosities. 



In a third larva of about the same age and size, the body is more red- 

 dish than in the others. 



Stage III. — August 16-20, summer brood. Length, 17 mm. The 

 head is narrower than the body, dull slate-brown, like the brown por- 

 tions of the body. On each side of the vertex are two parallel, dull 

 ochreous brown stripes, soon becoming distinctly yellow, and opposite 

 the apex of the clypeus turning outward at right angles and following a 



