Vol. XVI, pp. 55-58 May 6, 1903 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A NEW GENUS AND SPECIES OF DRAGONFLY 



FROM BRAZIL. 



BY JAMES G. NEEDHAM. 



Having used a figure of the wings of this species in a paper 

 soon to be issued in the Proceedings of the U. S. National 

 Museum, I herewith make public the full description of both 

 genus and species. 



Cyanocharis gen. nov. 



Allied to Heliocharis: Fam. Calopterygidae of Odonata. Nodus mid- 

 way between base and apex of wing. Two hypertrophied antenodal 

 crossveins, the straight arculus situated just beyond the first of these. 

 Extra half antenodal crossveins in the basal subcostal space, but no 

 crossveins traversing the space before the arculus. Quadrangle divided 

 by a single crossvein. Subquadrangle open, longer than the quadrangle, 

 but hardly more than half as wide. Anal margin coincident with the 

 anal vein almost as far as the subquadrangle. Vein M x _ 2 separating 

 from vein M 3 just beyond the quadrangle by a stalk so transverse it ap- 

 pears as a crossvein, and then fused in one or two places with vein R. 

 Vein M 2 separating from vein Mj a space beyond the subnodus. Stigma 

 large, very oblique at its proximal end. A single long interpolated 

 sector between veins M x and M 2 . The radial sector stronger than ad- 

 jacent veins and slightly bent forward beyond the nodus. Vein Cu, 

 forked with two rows of cells included in the fork. Legs very long and 

 slender, with numerous exceedingly short spines, the femora arcuate. 

 Claws minutely bifid at extreme apex. Superior abdominal appendages 

 of the male simple, curved; the inferiors rudimentary. 



Type, Cyanocharis valga sp. nov. 



17— Pkoc. Biol. Soc. Wash. Vol. XVI, 1903. (55) 



