Calvert: Odonata of the Neotropical Region. 129 



Wings yellowish throughout ; stigma with the distal side more 

 oblique than the proximal. 



c? {immature). Differs from the preceding description in having 

 very little dark color on the rear of the head, excepting the transverse 

 blackish stripe, which bounds the pale postocular spots posteriorly ; 

 only the upper end of the humeral branch of the humeral fork is indi- 

 cated by a brownish spot ; abdominal segment 2 marked as in the first 

 case above described, no oblique branch from the lateral black stripe ; 

 the black markings of the adult are generally bronze-green. 



9. Differs from the male as follows : Rear of the head as described 

 for the immature male ; pale (blue) antehumeral stripe at mid-height 

 three-fourths as wide to nearly as wide as the black mid-dorsal ; black 

 humeral stripe below the fork subequally wide to two- thirds as wide as 

 the pale antehumeral ; abdominal segment 2 marked as in the second 

 case described above for the male, no inferior oblique branch from the 

 lateral black stripe, although in some specimens an isolated round brown 

 spot appears to represent it ; transverse basal blue ring on 3-7 much 

 narrower, mid-dorsally interrupted with black in some specimens, a 

 narrow blue mid-dorsal stripe on 3-5 or 6, extending from the transverse 

 basal pale ring (or from just behind it, when it is interrupted) to two- 

 thirds or three-fourths of the length of each segment ; 8-9 marked as 

 in the male, but having in addition a pair of longitudinal dorsal black 

 stripes, extending from the base to three-fifths or two-thirds of the length 

 of each segment, the two on 8 united on the mid-dorsal line from base 

 backward (caudad) for a varying distance, while on 9 they are con- 

 nected only by a fine transverse line at the extreme base ; the hind 

 ends of these black stripes narrower, rounded ; in some specimens a 

 black line on the transverse posterior row of spines of one or both of 

 8 and 9 ; 10 blue, with no black markings even on the sides. 



cT' 9- Stigma of front wings surmounting more than one (45 per 

 cent. d\ 50 per cent. 9), one (40 percent. cf, 50 percent. 9 ) or 

 less than one (15 per cent. c?) cell; of the hind wings surmounting 

 one (60 per cent, cf, 87.5 per cent. 9 ) or more than one (40 per 

 cent, cf, 12.5 per cent. 9) cell. 



Antenodal cells on the front wings 4 (55 per cent. d\ 62.5 per 

 cent. 9 ), 5 (35 per cent. d\ 37.5 per cent. 9 ), or 4 -f (10 per cent. 

 c?); on the hind wings 4 (80 per cent. rj\ 100 per cent. 9), 3 (15 

 per cent, d") or 4 4- (5 per cent. cT). These percentages based on 

 10 cf, 4 9. 



