540 



PROCEEDINGS OF THE ACADEMY OF 



nervules from the disk, with the apical vein simple. Median vein 4-branched, 

 with the posterior nervule and the marginal opposite at their origins. The 

 fold is thickened and the submedian vein simple. In the hind wings the sub- 

 costal vein shows a tendency to separate into two veins from its point of bi- 

 furcation towards the base of the wing and resemhling two veins crossing each 

 other ; exterior to the point of bifurcation and a little behind the middle of 

 the lower branch arises a decided, curved discal vein which receives, just above 

 the medio-superior nervule, a decided or thickened discal fold. The median 

 vein is 4- branched, with the two posterior branches equidistant from the 

 second one. 



Head moderate, free, smooth; with large ocelli. Face broad, rounded. 

 Eyes rather small, round and scarcely prominent. Antenna? nearly as long as 

 the body, moderately pectinated in the tf, minutely pectinated in the 9 . 

 Palpi equal to the front, filiform, porrected, distinctly 3-jointed and with joints 

 neaily equal; terminal joint obtuse. Tongue about one-half as long as the 

 the thorax beneath. 



Body short, rather slender, not metallic. Patagia very minute. Abdomen 

 as long as the thorax beneath, not tufted at the tip and scarcely tufted along the 

 sides, with a minute, lateral tubercle on the basal segment. Legs extremely 

 slender and rather short ; fore tibia? with a slender tibial spur from the mid- 

 dle ; hind tibia? with two minute apical spurs. 



A. f a 1 s a r i u s .Black. Prothorax fulvous, especially on the sides, with 

 a point on the median line black. Hind wings rather thin. 

 Penn.; 111., from Mr. Kennicott. 



Procris? Facr. 



Fore wings somewhat fusiform. The subcostal vein with two distinct, rather 

 long marginal nervules, with apical vein simple, with two disco-central nervules. 

 The median 4-branched, the medio-posterior opposite the first marginal ner- 

 vule and the two upper branches on the line of the discal vein, which is 

 straight. The fold of the wing is thickened from the base to the tip. Sub- 

 median simple. Hind wings ^not as broad on the fore wings at their broadest 

 part, ovate. The subcostal vein is bifid, the lower branch giving rise to a de- 

 cided rather oblique discal vein and which is angulated above the medio- 

 euperior nervule, where it receives the discal fold. Median vein with four, 

 equidistant nervules. 



Head moderate, advanced, but without decided neck ; with rather large 

 ocelli. Face moderate, oblique and projecting tubercularly at the base of 

 the antenna?, and in the middle. Eyes small. Antennae incrassattd at the tip, as 

 long as the thorax beneath, with rather deep pectinations in the $>, serrated or 

 minutely pectinated in the . Palpi rudimental, tubercular. Tongue rudi- 

 mental. 



Body rather thick, short. Patagia rather elevated, consisting of two trans 

 verse plates rounded above, making the prothorax more than ordinarily wide 

 above. Abdomen ovate, without apical tuft, less long than the thorax be- 

 neath. Legs short and slender; fore tibiae unarmed; hind tibia; with two 

 very minute apical spurs. 



P.? S mi thsoniana. The entire insect is greenish black; immaculate. 

 Texas. Capt. Pope's collection. From the Smithsonian Institution. 



Malthaca. 



Fore wings rather broad, obovate ; 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 



[Nov. 



