NORTH AMERICAN LEPIDOPTERA. 147 



as the discal dots, of which there are two of jet-black raised scales on either side 

 of the cell, the lower one being a little more remote from the base of the wing. 

 Outer line scarcely visible in most of the examples, of the general color of the 

 wing, dentate throughout its course, and bordered on each side with a very pale 

 shade of brown, which is darker and broadens on the costa. A row of terminal 

 black dots. The middle of the wing sparingly sprinkled with black scales. 

 Fringes concolorous with the wing; all the wings beneath, hind wings above 

 and abdomen light brown ; all the tibiae and joints of the tibiae whitish. 



District of Columbia, New York, Ohio. Taken by Prof. Forbes 

 at Urbana, O., at electric light, May 12th, 26th and August 2d. 



Larva. — When full grown 16 mm. in length, greenish yellow, with three lon- 

 gitudinal brown stripes on each side of the dorsal line extending from the tho- 

 racic to the anal plates, and alternating with narrow lemon-yellow stripes, the 

 last one being ou the spiracles. Head, thoracic and anal plates with more or 

 less brown marks and blotches. There is great variation in these larvae in the 

 intensity of the brown markings, but they can be readily recognized by a black 

 lunate spot on the inner side of the subdorsal tubercle of the third segment 

 behind the thoracic plate. 



Pupa. — Length 10 mm., dark brown, rounded anteriorly, posterior end with a 

 small spine on each side extending obliquely out and backward, the end curving 

 backward. In a line between these stand four hooks, much longer than the 

 lateral spines. Abdominal segments, except the last, covered with coarse punc- 

 tures, except on the posterior edge. Wing covers reaching to the fourth abdom- 

 inal segment. 



The above descrijitions are from Prof Fernald. Prof Comstock 

 says, in addition, "a large number of larvae in different stages of 

 growth were found August 12th, drawing together and feeding on 

 the leaves of the honey locust (Gleditschia triacantlms), on the de- 

 partment grounds at Washington, D. C. These larvae transformed 

 to pupse from the 3d to the 15th of September. When full grown 

 they descend to the surface of the ground, where they spin a loose 

 cocoon of coarse gray silk, which is completely covered with frag- 

 ments of dried grass leaves and other substances, which so conceals 

 them that they are difficult to be found. 



Two of these moths emerged in the latter part of September, but 

 the most of them during the last half of the following INIay and 

 early part of June, so that it is more than probable they pass the 

 winter in the pupa state on the ground under the trees." 



2. T. liiiitella Walk., C. B. M. pt. 27, p. 53, 1863 {NephopternxJ.—'DArk 

 cinereous. Abdomen and hind wings paler. Palpi erect, rising much higher 

 than the vertex, third joint lanceolate, nearly the length of the second. Fore 

 wings narrow, rounded at the tij)s, with basal interior and exterior lines irreg- 



