322 



The moth rests mostly with wings half erect, but deflexed, especially the 

 females. The male, after flying, often alights and rests with wings nearly 

 horizontally deflexed, in a deltoid form, sloping downwards. 



Pericallia quercaria Harr. mss. [Nematocampa filamentaria 

 Guen.] [PI. Ill, fig. 5.] 



June 10, 1841. Found on an oak tree. Attitude in repose as repre- 

 sented in the figure. 



Grayish ; head spotted with brown ; first three rings dusky at the sides, 

 fourth and fifth brown at sides and on the top, with a dusky lateral streak; 

 sixth, seventh and eighth rings with a blackish sti'ipe on each side, on the 

 eighth passing obliquely upwards and backwards, and meeting a dusky sti'ipe 

 on the top of the ninth, tenth, eleventh and twelfth rings. Legs ten, gray. 

 Two short brown tubercles on back part of fourth ring, immediately behind 

 which on fifth ring are two small, white warts ; on back part of fifth ring 

 two slender, tentacular horns, of a gray color, blackish towards the end, and 

 tipped with white; these are movable, can be straightened or unrolled, and 

 lengthened and shortened, but ai-e usually curled over the fourth ring. On 

 back part of sixth ring two similar, tentacular horns curling backwards; be- 

 fore these are two small, gray warts ; on each of the following rings two 

 gray warts, those on the eleventh ring the most prominent. 



Chrysalis in imperfect cocoon, June 15, 1841. Winged before the 8th of 

 July, 1841. 



Found another larva on the willow about June 12, and still another on 

 the rose, June 18. 



Hypsena humuli Harr. 



July 10, 1841. Larvaj on hop. Most of them had then left the vines. 

 This was fully grown. 



True legs six, anal prologs two, abdominal prolegs six, total fourteen. 

 Body long, cylindrical, tapering at each end. Green, with a deeper green, 

 dorsal line, and a longitudinal, whitish line on each side of the back ; a faint, 

 inconspicuous, whitish line on each side just below the spiracles. Head 

 green, regularly spotted with small, black, piliferous dots, as also is each seg- 

 ment, the dots of which are arranged in two transverse rows. Intersections 

 deep and distinct. Legs green. Geometi'ideous in its gait. Length 

 eight tenths of an inch. 



Botys? sp. [Pionea euuusalis AValk.] [PI. iv, fig. 18.] 

 Oct. 30 and Nov. 1, 1841. Found on leaves of horse-radish. 

 They eat large holes out of leaves, leaving finally only the veins un- 

 touched. They live beneath the leaves, stretched out by the sides of 



