OF NORTH AMERICA. 33 



ZYGJENIN51. 

 Genus PYROMORPHA, H. S. 



"Head moderate, free, vertex rather elongated, smooth; ocelli 

 large. Face moderately broad, rounded, slightly protuberant. Eyes 

 rather small, scarcely prominent. Antennae with bases almost united, 

 rather thick, but tapering at the tips, pectinated. Palpi extremely 

 short. Tongue about half as long as the thorax beneath. 



"Fore wings rather broad, ovate; the discal cell broad, behind 

 fusiform. The subcostal vein sends two short, nearly erect, marginal 

 nervules to the costa; and from the superior angle of the disc, arise 

 two long nervules, on a short, common stalk, the lower one of which 

 is the apical, but delivered rather above the tips. The discal vein is 

 rather faint, and gives rise to two disco-central nervules, the upper one 

 rather on the costal side of the wing. Median vein, four-branched; 

 the posterior nervule arising a little behind the first marginal branch. 

 The fold is thickened, and the sub-median shortly forked at the base. 

 Hind wings ovate, as broad as the fore wings, and in length equal to 

 that of the body, without costal vein. Sub-costal is furcate, the lower 

 branch giving rise, at an obtuse angle, to a thickened discal vein, which 

 is angulated above the medio-superior nervule, where it receives the 

 discal fold, and above this is given off a single disco-central nervule. 

 Median vein four-branched, with branches equi-distant, except the two 

 superior ones. 



" Body slender, cylindrical. Patagia minute, rolled. Abdomen 

 not tufted at the tips or on the sides, about one-half the length of the 

 body beneath. Legs slender; fore tibiae, with a short, concealed spur 

 on its middle; hind tibi^, with two extremely minute apical spurs. 



C/em. App. Syn. Lep. N. Am. 



