Needham New Genus and Species of Libellulinae. 115 



iors in lateral view are decurved in their first half to a sharp inferior spine, 

 and upcurved in their second half, to an acuminate tip ; in dorsal view 

 they are convergent in their basal half and closely parallel and straight in 

 the apical half. The inferior appendage is simple, upcurved, and two-fifths 

 shorter than the superiors. 

 Two males, Ypiranga, Brazil, March 25, 1898, Adolph Hempel, collector. 



FIG. 1. Wings and appendages of Edonis helena. a I, anterior lamina viewed from 

 below ; h, hamule, in situ, viewed from the side ; g I, genital lobe ; v, vesicle ; t, 

 terminal segments of the abdomen. 



