26 Zl'GCENIDiE AND BOMBYCID/E 



base of the patagia, orange. Rest of patagia, black. Thorax and ab- 

 domen, deep cyaneous, blacker below. Legs, black, with metallic blue 

 reflections. 



Anterior wings, smoky black or brown, with the fringes white, and 

 slightly interrupted on middle of the outer margin. Posterior wings, 

 deep blue black ; fringes white, interrupted with black near the apex. 

 Beneath, entirely deep sooty black. 



$ . — Differs only in having antennae with very short pectinations. 



Expanse of tvings : 1.90 inches. Length of body : 0.75 inch. 



Habitat : Buffalo, N. Y., Canada, Eastern and Middle States (Grote.) 

 Maine (Sanborn and Packard.) 



This insect is reported as having been taken by Mr. Grote in damp 

 woods near Buffalo, N. Y., and appears to be generally distributed over 

 the Northern Atlantic States. Dr. Packard says of it : "I have taken 

 the moth late in July, at Perry, Maine, and early in August at Bruns- 

 wick. It flies in the hot sun, hovering over flowers, and is not difficult 

 to capture, since its flight is not strong or rapid. In cloudy days it 

 clings to the stems of plants, and can be easily taken with the hand." 



Larva. — The larvae, from which the following descriptions were 

 drawn up by A. S. Packard, Jun., "were found June 6th, on the spears 

 of grass, which grew in a sunny place upon a high neck of land running 

 out into Casco Bay, Maine." 



" The head is large, being nearly as wide as the prothoracic ring. 

 The verdcal region is largely developed and is considerably narrower 

 above than in front. The epicranium is small, being nearly equila- 

 terally triangular, the clypeus is narrower than the epicranium is long, 

 and is raised, thickened, and its front edge distinctly convex. The 

 labrum is short, and divided into two remote broad and short lobes. 

 The mandibles are very broad, short, obtuse and thick. The labium 

 and maxillae can not very well be made out in my specimen, they are 

 fleshy and with no determinate form for comparison." 



"The body is short and rather thick, the rings moderately convex, 

 and in consistence the skin is softer and more flexible than usual. 

 On each side of the body are six rows of tubercles, the tergal ones 

 much the largest. There are on each ring of the abdomen four large 

 warts, arrayed in a broad trapezoid, becoming linear in position on 

 the thoracic rings, and on the supra-anal plate. These tubercles give 

 rise to dense fascicles of evenly cut hairs, which radiate out on every 

 side so as nearly to conceal the body, and give it when viewed from 



