32 E. B. Williamson and J. II. Williamson 



leaden grey in dried specimens. Appendages black, at thin places dark 

 reddish horn showing through. 



Length of the wing or lobe on the expanded postero-ventral margin of 

 the tergum of 2 about .8, and the distance from the apex of this lobe to 

 the antero-ventral angle of the tergum about 1.8. 



Female. — Labium as in the male ; labrum and clypeus brown, the labrum 

 narrowly black margined in front and the anteclypeus with a median spot 

 and the lateral margin pale (bluish?). 



Prothorax as in the male. 



Thorax similar to that of the male with the following differences: mid- 

 dorsal black reduced to a median bar about .5 wide, bordered on either 

 side with broader brown, fading out into a pale bar along the suture, the 

 latter probably blue in life ; mesepimeron lacking the dorsal posterior black 

 spot of the male; the bright rust less evident on the metepimeron. Meso- 

 stigmal lamina similar to that of the male. 



Coxae similar to those of the male, the rust color scarcely evident on 

 the third pair. Femora similar to those of the male, slightly paler and less 

 reddish. Tibiae pale yellowish, the first pair dark beneath along the comb. 



Venation similar to that of the male ; stigma slightly duller. 



Abdomen seen from above similar to that of the male with the following 

 differences : dorsal bar on 1 fading out and disappearing at the base : on 

 3-5 the dark dorsal area on each segment is black only at its base against 

 the basal blue ring, shading at once posteriorly into brown, which brown 

 darkens anteapically into black which is more extensive than the basal 

 black ; 6 is brown throughout in the dark area, without black, but the apex 

 darker; 7-10 brown, 9 darker, each side with a large lateral blue spot, the 

 brown between them at base about .8 wide; in dorsal view the blue spot 

 disappears at about two-thirds the length of the segment. In side view 

 1-5 patterned about as in the male but duller; 6 brown, except the pale 

 base which is carried along the ventral border a short and indefinite dis- 

 tance; 7, 8 and 10 brown; 9 largely blue, the antero-ventral area brown, 

 and apically the brown dorsum is carried onto the side in an obscure ill- 

 defined pattern, but does not reach the ventral margin which is pale 

 throughout except at the base. Sternum of 1 pale ; 2-5 each similar to 3 of 

 the male; 6 and 8 each similar to 5 but no anteapical fading out of the' 

 black; 7 is like 6 or has the black fading out at the apex. Appendages 

 black, flattened cone-shaped, acute, similar in shape to those of magdalenae. 

 Valvular styles at their point of attachment at about the level of the apex 

 of 10 or very slightly more proximal. 



Venational characters based on foii,r males and four females 



Postnodals front wing, 11 (100% males), 12 (25% females), 13 (62.5% 

 females), or 14 (12.5% females); hind wing, 10 (25% males), 11 (75% 

 males, 12.5% females), or 12 (87.5% females). 



M3 in front wing arising at the first postnodal (75% males, 50% 

 females), or between the first and second postnodals (25%' males, 50% 



