262 LEPIDOPTERA OF NORTH AMERICA. 



rather deep pectinations in tlie ^ , serrated or minutely pectinated 

 in the 9. Palpi rudimental, tubercular. Tongue rudlmental. 



Body rather thick, short. Patagia rather elevated, consisting 

 of two transverse plates rounded above, making the prothorax 

 more than ordinarily wide above. Abdomen ovate, without apical 

 tuft, less long than the thorax beneath. Legs short and slender ; 

 fore tibiae unarmed; bind tibiae with two very minute apical spurs. 



1. P.? smithsoniana Clemens. Proc. Acad. Nat. Sci., 1860, 540. 



The entire insect is greenish-black ; immaculate. 

 Texas. Capt. Pope's collection. From the Smithsonian In- 

 stitution. 



Fam. glatjcopididae. 



"Wings narrow, often limpid or with limpid spots. Fore 

 wings equal in length to that of the body. Hind wings 

 short, scarcely more than half as long as the fore wings, 

 rounded, rarely angulated. In the fore wings the subcostal 

 vein is only slightly arcuate from the base to the tip of the 

 wing and subdivides into five or six branches, the two first 

 of which, sometimes contiguous and sometirhes separated, 

 run to the costa. The origin of the discal and subcosto- 

 inferior nervule is a common one, and the marginal nervules 

 arise contiguous to each other and interior to it, or one inte- 

 rior and the other exterior. After the origin of these, the 

 subcostal continues to the tip of the wing, and about midway 

 subdivides into an apical and post-apical branch, the former 

 of which is sometimes bifid at its tip. The median is 4- 

 branched and curves upward from the 2d (medio-inferior); 

 the 1st (medio-posterior) is separated at its origin from the 

 others, and is curved. The discal fold is distinct, and the 

 . discal nervure extends nearly across the disk. 



The hind wings are loithout the costal nervure. The sub- 

 costal is bifid, sometimes sending a nervule to the costa from 

 the disk. The median is us'ially likewise hifid, sometimes luith 

 the lower branch forked near its end. In some genera, how- 

 ever, it is 3-branched. The discal vein is usually much 

 curved and oblique, usually without a nervule to the hind 

 margin, but sometimes with a medio-discal nervule, that is, 

 with one on the side of the median system. 



