32 E. B. Williamson 



3-6; 8 and 9 pale reddish brown with a pair of transverse green streaks 

 near the base of each; 10 and appendages yellow; 6 and 7 are greenish 

 anteriorly merging into brown posteriorly. Legs black, first and second 

 femora inferiorly, and second and third, tibiae superiorly, pale green. When 

 this insect was flying the chief color efTects were the green of the head and 

 thorax, and orange at the end of the abdomen due to a blending of the red 

 of 8 and 9 and the yellow of 10 and the appendages. It woidd poise in the 

 same spot in the air for a minute or so at a time and at five to ten 

 inches above the ground which was a somewhat muddy piece of grassy road. 

 Twice I struck at it and came very near it, but it flew swiftly away only to 

 a short distance, soon returning to a spot near where I had struck at it. 

 (Many male Anisoptera, following copulation, will return to the spot where 

 they captured their ovipositing mate, certainly associating the ])lace with 

 the capture, and again seeking the female there. — E. B. W.) 



The following notes on living colors were made on the male captured 

 April 13 at La Fria : Eyes bright dark green above, paler in front, 

 bluish posteriorly, (not rear of head), and gray beneath with one black and 

 several brown pseudopupillae. Labrum almost white, face pale bluish, 

 darkening above ; f rons above blue, T-spot black ; rear of head above 

 narrowly shining black, a broad black band to the foramen, remainder very 

 light blue, darker above, white below. 



Front lobe of prothorax almost white, middle an;l hind lobes brown. 

 the latter narrowly green edged behind. Thorax bright green, a small 

 brown area below on the mes-and metepimeron ; middorsal carina narrowly 

 dark reddish brown ; interalar sclerites green, except the two posterior 

 median ones and the one on either side between these two on the wing 

 base, which four are bright blue. 



Abdominal segment i green, light brown above on the apical half; 2 

 green below and beneath the auricles, above green at base, a longitudinal 

 median bar, green in front and shading into blue behind where it passes 

 into a broad transverse bar of blue which is bordered posteriorly with black; 

 auricles bright blue above ; above each auricle is a broad brown area not 

 quite divided by a transverse green bar which is slightly wider above; 

 anteriorly this brown area shades out into the basal green ; (none to four 

 small denticles in a scattering row on the converging margins of the 

 genital fossa; auricles with five to six denticles) ; abdomen passing progres- 

 sively posteriorly from a rich brown and bright green coloration to a dull 

 orange color on 8 and 9, and light yellow on 10 and appendages ; 3-7 with 

 a very narrow longitudinal middorsal brown stripe which disappears pro- 

 gressively posteriorly; 3-10 beneath yellow; 3 on either side at base blue, 

 remainder above green, shaded posterior to the transverse carina with 

 light reddish brown, on either side a small triangular median and a larger 

 rounded subapical bright green spot ; 4 similar, but lacking the basal blue 

 and the posterior brown shading more extensive ; 5-7 similar to 4, the 

 area posterior to the transverse carina brown, and therefore progressively 

 posteriorly occupying more of each segment, all with four green spots as 

 described for 3, except the ajiical spots which have disappeared on 7 ; 8 light 



