INSECUTOR INSCITI^ MENSTRUUS 17 



posteriorly ; occiput with two heavy, uninterrupted, transverse 

 chitinous ridges behind and numerous faint anastomozing 

 lines in front of them ; all cephalic bristles long, stout, dark, 

 the prominent interocellar pair nearly as long as eye, a large 

 postocular pair two-thirds as long. Eyes about half as long as 

 head and two-thirds as wide as their interval. Ocelli of pos- 

 terior pair widely separated, distinctly behind middle of eyes, 

 equal in size to anterior ocellus. Antennse about two and one- 

 half times as long as head; segments 1 and 2 dark blackish 

 brown, 2 slightly paler at apex ; 3 clear lemon yellow ; 4 lemon 

 yellow, infuscate in apical half ; 5-8 blackish brown, 5 yellow 

 at base ; segment 1 about as long as wide ; 2 twice as long as 

 wide; 3 and 4 nearly fusiform, each a little more than three 

 times as long as wide, 3 slightly longer and wider than 4; 5 

 slightly narrower and much shorter than 4 and 6, nearly three 

 times as long as wide, slender in basal half ; 6 a little more than 

 three times as long as wide, only slightly more than 0.8 as 

 long as segment 4, not at all abruptly constricted at apex ; 7 and 

 8 small, cylindrical, 8 slightly longer and narrower than 7. 



Prothorax about 1.3 times as long as head and about 1.4 

 times as wide as long, suborbicular in form with anterior mar- 

 gin straight ; pronotum smooth ; all bristles unusually long, 

 stout, and prominent, black in color, nearly as long as head 

 (PI. II, fig. 3). Wings of fore pair almost clear in basal 

 third, blackish brown beyond, about thirteen times as long as 

 width at middle, set with unusually long, heavy, black, nearly 

 equidistant bristles, of which there are about 30 on the costa, 

 22 on the anterior vein, and 17 on the posterior vein. 



Abdomen broader than pterothorax; tergite of segment 1 

 with oblique anastomozing striae at base and sides, other seg- 

 ments nearly smooth above ; segment 10 divided above ; ab- 

 dominal bristles long, stout, black. 



Measurements of holotype: Length 1.680 mm. ; head, length 

 0.168 mm., width 0.218 mm. ; prothorax, length 0.216 mm., 

 width 0.308 mm. ; pterothorax, width 0.378 mm. ; fore wing, 

 length 1.272 mm., width at base 0.126 mm., at middle 0.096 

 mm. ; abdomen, width 0.492 mm. 



