88 Annals of the Carnegte Museum. 



quadrilateral of hind wings, with two rows of cells (or at least some 

 double cells) in the distal part of each ; distal parts of the quadrilat- 

 eral and cubital space, and all of the anal area of the front wings, as 

 well as the proximal ends of the areas immediately distal to those 

 named, filled with numerous small closely-set areoles ; cubital space 

 of the hind wings with one row of cells throughout, anal area of the 

 same with two rows except at its extreme proximal end. Area Cu 2 on 

 front wings in most cases with three rows of cells for part of its length, 

 on hind wings with two rows. No vestige of a pterostigma. Front 

 wings with 26-32 antenodals, 38-43 postnodals. 



9. Differs from the male as follows : second antennal joint yellow; 

 labrum chiefly yellow, its base, anterior margin, and a median line 

 (sometimes interrupted) black ; yellowish-brown humeral area much 

 widened not only by encroachment, especially at the lower or anterior 

 end, on the dark mid-dorsal coloring, but also on that of the mesepim- 

 eron, which sclerite is thereby predominantly pale colored ; mete- 

 pimeral dark stripe reduced in length and width ; posterior margin of 

 abdominal segment 10 produced inferiorly into two subacute processes 

 on each side, the upper of the two larger and spinulose ; abdominal 

 appendages subequal in length to 10, straight, conical, apex acute, 

 blackish, but pale brown at base ; femora pale brown inferiorly ; wings 

 greenish-yellow, unmarked, but the areas corresponding to those occu- 

 pied by the apical red spots of the male are slightly more densely 

 reticulated than adjoining areas, to about the same degree as in the 

 male ; quadrilaterals and cubital spaces and in some also the median 

 spaces of all the wings, as well as the areas immediately distal, con- 

 taining but one row of cells each ; anal area of the front wings of but 

 two rows of cells, of the hind wings of two rows in its distal part only ; 

 area Cu 2 on front wings with 3 (75 per cent.) or 2 (25 percent.) rows 

 of cells, on hind wings with two rows, rarely 3 ; front wings with 

 22-25 antenodals, 30-40 postnodals. 



Young 9- — Frons and nasus pale brown, the latter with some 

 metallic reflection, thorax pale brown, none of the markings distinct, 

 metapleura still paler, abdomen and legs brown throughout; other- 

 wise as in the older females. 



Dimensions. — Abdomen $ 41-43, 9 32-36 ; hind winged 30-31.5, 

 9 29-33 mm> 



Habitat. — Bolivia: Chulumani, November 30, 1898, to January 

 5, 1899, 4 d\ 8 9 ; twelve miles northeast of Coroico, May 20 and 



