THE CANADIAN ENTOMOLOGIST. 211 



around the body in the incision between the second and third abdominal 

 segments. After the girdle is in place, the caterpillar settles into a 

 somewhat crouched position, and then finally arches its body as it awaits 

 the time of ecdysis, several days afterwards. The placing of the girdle 

 occupies about two minutes ; if placed too far caudad it is liable to 

 interfere seriously with ecdysis. Unfortunately, no observations were made 

 during pupation, so that the method of placing the girdle by the chrysalis 

 was not seen. Described from 13 specimens. 



Duration of Pupal Instai s. — The duration of pupal life for fifteen 

 individuals reared averaged 16 days, from June 28lh to July 14th, and 

 ranged from 14 to 21 days. The males issued before the females. 



NEW MICR0T.EP1D0PTERA. 



BY W. D. KEAKFOTT, MGNTCLAIR, N. J. 



(Continued from page 160.) 

 Cerostoma dorsimaculella, sp. nov. — Expanse, 18.5 to 19.5 mm. 

 Head whitish-gray, in which are mixed a few dark gray scales ; j;alpi 

 whitish-gray, tuft of second joint clouded with brownish-gray at the outside 

 and at the ends, apical joint dark brown beneath and less so on the sides, 

 whitish gray above ; antenna white, annulated with brownish-gray ; thorax 

 cinereous-gray, posterior tip whitish, inner edge and base of patagia dark 

 brown ; abdomen whitish-gray, anal tuft with a cinereous tinge ; legs 

 cream-white, heavily dusted with brownish-black in front. 



Fore wing very light gray, with a slight yellowish tinge, slrigulated 

 and marked with bronzy-black. The most conspicuous marks are on the 

 dorsal margin, below the fold ; the inner is a narrow triangle, with base on 

 dorsum at inner fourth, and apex touching fold at inner third ; the outer 

 spot rests on dorsal margin between middle and outer fourth, its upper 

 edge is slightly concave, causing an enlargement at the inner end and a 

 linear extension at the outer end that rises, obliquely outward, above the 

 fold. There are two curved transverse lines from costa, before middle of 

 wing, not reaching fold, beyond them are five shorter costal streaks, before 

 the outer fourth. Below these latter, at the end of cell, is an angulated 

 line, with a few blackish scales above and below it. There are a few dark 

 dots in the line of the middle of the wing, one at base, one a little beyond 

 ■base, and two near middle of cell. There is a large dark dash in apex, 

 which extends into cilia, becoming paler at the tip. A itw dark scales at 

 end of cell, and another small cluster above tornus. Cilia concolorous. 



