THE CANADIAN ENTOMOLOGIST. 



217 



front rather deeply impressed, labrum short and transverse ; mandibles 

 short, blunt, piceous ; antennte minute, a basal very short joint scarcely 

 as long as wide supporting a second of the same thickness, twice as long 

 as wide ; in the tinal moult, apparently of one or two very short joints 

 bearing a terminal short tuft or pencil of fine closely-placed hairs. Behind 

 and a little outside the antennce are three ocelli in a triangle. (Fig. lo.) 



The pronotum is longer than any of the following segments, the 

 anterior outline somewhat semicircular, without any anterior angles, 



Fig. io. — Ignotus a?nig:mati- 



cus, larva : a, ocelli ; h, 



antenna ; c, a long 



hair. 



.^\ 



I ii 



* t I 



^^ 



' "/"♦.■"•, 



M -7, 



" -r , 



i\t\^ . 



y i\ 



^^ 



Fig. II. — Larval hairs. 



Fig. 12. — Middle leg- of male 

 larva. 



meeting the broadly arcuate basal margin in an indefined obtusely rounded 

 angle. The following thoracic and abdominal segments subequal, short 

 and strongly transverse, the ninth shorter and narrower. The vesliture is 

 composed of hairs and bristles of three kinds ; the hairs are simple, long 

 and fine, the bristles are taper-pointed or clavate, and sometimes abruptly 

 acuminate, and throughout thickly hispid with minute black points or 

 spines. (Figs. 10, 1 1.) 



