25 



Antenna; inserted on the hinder part of the head, slightly arcuate, three-jointed ; 



one short ; two nearly twice as long as the first ; three as long as the 



preceding, but more slender and rather subulated. 

 Epistoma short. Lahruin broad and prominent, circularly rounded in front. 

 Maxillary jMlpi very i^rominent, three-jointed ; one rather long and stout ; two 



shorter and more slender than the first ; three as long as the two preceding, 



robust, incrassate near the middle, especially on the inner side, with a single 



long hair at the apex. 

 Maxilhe unilobed ; lobe large, trapeziform, with the anterior angle acute. 

 Labium short, not prominent, quadrately truncate. 

 Labial palpi small, two-jointed. 



Mandibles moderately robust, slightly arcuate, acutely pointed, and rufescent. 

 Legs short, three-jointed, furnished with bristles, and terminating in a faintly 



curved hook or claw. 



PUPA. 



Of the pupa of Orthoperas, M. Perris merely says that is fixed in position by 

 its posterior part encased in the white skin of the larva, and is divested of every 

 hair and every appendage. 



