HEiMIPTERA— HOMOPTERA— FULGORINA. 299 



middle series of definitely arranged cross-veins all the longitudinal veins 

 and their branches are united by cross- veins all the way to the base; these 

 are straight and transverse except between the costal and upper radial veins, 

 where the wing is more or less reticulate. The wing is more or less fuligi- 

 nous, with two small, faint, round, pale spots on the costal border on either 

 side of the curious arcuation of the veins. 



Length of tegmina, 11.5""; breadth, 6.3""°. 



Green River, Wyoming. One specimen. No. 117, Dr. A. S. Packard. 



Subfamily FLATIDA Stal. 



Gravenhorst and Burmeister have both reported species of Flata as 

 found in amber, but none were described or mentioned by Germar in 

 Berendt's great work, neither have any been reported from the rocks. The 

 genus Lithopsis, however, which I formerly regarded as one of the Tropi- 

 duchida, appears to belong here, the two anal veins in the clavus being dis- 

 tinctly separated throughout. I have now another species to add to that 

 first described. 



LITHOPSIS Scudder {XWo?, oipi?). 



Lithopsis Scudd., Bull. U. S. Geol. Geogr. Siirv. Terr., IV, 773 (1878). 



Body oblong, stout, and apparently cylindrical anteriorly, tapering 

 and probably compressed posteriorly. Head broad and short, the front 

 not produced beyond the eyes, broad, transverse, very gently convex. 

 Tlie united thorax and scutellum of about equal length and breadth. Teg- 

 mina surpassing considerably the tip of the abdomen, two or three times as 

 long as broad, beyond the middle barely tapering, the sides subequal, the 

 apex rounded, the costal margin gently convex ; margino-costal area broad, 

 broadening regularly toward the apex, and throughout its length traversed 

 by very frequent transverse veinlets, which become more and more oblique 

 toward the apex of the tegmina, where they are supplanted by the similarly 

 close branches of the longitudinal veins ; these are united at the origin of 

 the forks by transverse veins in continuity with the costa itself, The radial 

 vein is branched at the base of the tegmina, the inner ulnar vein at some 

 distance before the middle of the wing, and both branches of this vein and 

 the lower branch of the radial vein fork again at half the distance from the 

 first fork of the inner ulnar vein to the tip of the wing, but they are not 

 connected at this point by transvei-se veins. Wings as long as the tegmina. 



