19(> Annals of the Carnegie Museum. 



sternum on which it lies ; a much narrower antehumeral stripe reaching 

 downward from the upper end of the humeral suture half to three-fifths 

 of the way to the lower end of the sclerite, or absent, except at the 

 upper end of the humeral suture ; a mesepimeral stripe half as wide as 

 its sclerite, usually confluent above with the antehumeral, not touching 

 the humeral suture in most of its length, and continued across the 

 mesinfraepisternum, on which it is narrower ; a short mark at the upper 

 ends of the obsolete first and of the second lateral thoracic sutures, 

 and smaller isolated marks or dots below these in some specimens. 



Dorsum of abdominal segments i-io black, the black widening on 

 the sides at the apices of 3-5 ; the intersegmental articulation of 1 and 

 2, a narrow transverse basal ring on 3-7, and an indistinct mid-dorsal 

 spot on 9, yellow ; sides inferiorly and ventral surfaces of the abdomi- 

 nal segments orange. Hind margin of segment 10 with a small semi- 

 circular mid-dorsal excision, but not at all elevated. 



Superior appendages shorter than 10, blackish, in dorsal view rather 

 distant, moderately divergent (in specimens in which no attempt to 

 arrange them for easy inspection has been made), narrower at the obtuse 

 apex than at the base ; in profile view directed caudad, but only slightly 

 ventrad, straight, each one about twice as long as thick at the middle, 

 apex obtuse. 



Inferior appendages in profile view twice as thick at base as are 

 the superiors, apical half much slenderer, directed upwards, slightly 

 recurved and hooked at the extreme apex, which reaches to the level of 

 three-fifths of the length of the superiors ; in ventral view pale brown- 

 ish-yellow, the slender apical half forming a process on the outer edge 

 and curved somewhat toward its fellow of the opposite side. 



Legs orange, all the femora and tibiae anteriorly and much of each 

 tarsus black, 6-7 spines in the anterior row of the third tibia. 



9. Differs from the description of the male as follows : black ante- 

 humeral stripe faint, except the spot on the upper end of the humeral 

 suture from which it starts, mesinfraepisternal continuation of the mese- 

 pimeral stripe hardly narrower. (Abdominal segments 7-10 lost.) 

 Hind margin of the prothorax in both sexes low, convex, entire. 



rj*9. Wings clear, stigma brownish-yellow, surmounting less than 

 one cell, distal edge distinctly convex and forming a much less acute 

 angle with the costa than does the proximal side, stigma of the hind 

 wing larger than that of the front, its costal edge shorter than the prox- 

 imal or distal edge ; on the front wings the costal edge varies from 



