288 LEPIDOPTERA OF NORTH AMERICA. 



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 4- 

 branched, with branches equidistant, except the two superior ones. 



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 one-half as long as the thorax 

 beneath. 



Body slender, cylindrical. Patagia minute, rolled. Abdomen 

 not tufted at the tip 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 tibiae with two extremely minute apical 

 spurs. 



1. M. perlucidula Clemens. 



Blackish-brown. Wings slightly transparent. Fore wings with 

 the basal half luteous above the fold. Hind wings luteous along 

 the costa from the base to the middle. 



Illinois, Mr. Kennicott. Maryland, Dr. Morris. 



Clemens. 



Fam. II. LYCOMORPHIDAE. 



Hind wings without costal vein. Subcostal bifid, the 

 lower branch slightly angulated near its base, giving rise to 

 an oblique, simple discal vein. Median vein 3-branched, 

 with branches equidistant, the medio-superior branch re- 

 ceiving the discal fold. In the fore wings is rather remote 

 from the costa and its marginal branches rather erect. 



LYCOMORPHA Harris. 



Wings narrow. Fore wings nearly fusiform. Near the poste- 

 rior end of the disk the subcostal vein gives rise to two marginal 

 nervules and two nearly equidistant exterior to the disk. Without 

 post-apical nervule. The subcosto-inferior nervule and the discal 



