66 Annals Entomological Society of America [Vol. V, 
that group. For it is only fair to assume that the wings in 
Asynacta are of the usual type, otherwise Foerster would have 
mentioned it in his description of the genus. 
Hydrophylax. New genus. Antenne 8-jointed; scape, ped- 
icel, ring joint, 2 funicle joints and 3-jointed club. Fore wings 
extremely narrow, twenty times as long as wide; marginal cilia 
at least four times as long as the width of wing. Abdomen is 
conic-ovate, broadly joined to the body. Ovipositor slightly 
exserted. 
Fic. 1. Hydrophylax aquivolans. 
Drawn by Miss Anna C. Stryke. 
Type, the following species. 
Hydrophylax aquivolans. New species. @ length .6 mm. 
Length of fore wing .69 mm.; hind wing .45mm. (Fig. 1.) 
General color light brownish yellow. Legs and antenne 
paler. Head seen from above gently concave in front and 
behind, sparsely clothed with a few stiff setae. Thorax smooth, 
clothed with stronger sete. Scutellum gently rounded behind. 
Postscutellum with two fine seta, close together on each 
side. Propodeum smooth, without sete except near the 
spiracles. Metathoracic spiracles enlarged, with two short, 
knobbed hairs which appear to arise within the opening. 
Abdomen conic-ovate, sparsely clothed with long stiff sete, 
broadly joined to the thorax; 5 visible dorsal segments; length 
of abdominal segments in the ratio of 5, 2, 2, 2, 3. Ovipositor 
exserted about the length of the shortest abdominal segment. 
