312 TERTIARY INSECTS OF NORTH AMERICA. 



seems to show. The eye is small, as there. The tegmina are hyaline, 

 apparently reaching about to the tip of the abdomen (the whole of which 

 is not preserved, but can be readily restored in the main), and has few lon- 

 gitudinal veins connected, a little beyond the middle and again more than 

 half-way to the tip, by series of cross-veins. The legs are rather short and 

 moderately stout, the middle tibiae only half as long again as the tarsi. 



Presumed length of body, 6.5°"" ; breadth, 2.5'"'" ; length of tegmina, 

 5.5°""; middle tibia}, l.?""-"; tarsi, 1.2"'"'. 



Florissant. One specimen, Nos. 11307 and 14386. 



JASSOPSIS gen. nov. (Jassus, nom. gen.). 



Allied to Thamnotettix. The thorax is rounded subquadrate, as long 

 as broad, and the scutellum not more than half as long as the thorax. The 

 veins of the tegmina are peculiar in that the radial parts from the costal 

 vein and the ulnar vein from the sutura clavi at similar and very short dis- 

 tances from the base ; there are but three apical cells. 



A single species is known. 



Jassopsis evidens. 

 PL 19, Fig. 16. 



The single specimen is preserved so as to show a dorsal view with the 

 tegmina unequally expanded. The head is lost but was relatively narrow, 

 to judge by the anterior tapering of the thorax. The body is very dark 

 and uniformly so, the posterior angle of the scutellum a right angle. The 

 tegmina were semiopaque, with the veins heavily marked, the sutura clavi 

 terminating in the middle of the wing ; they are three and a half times 

 longer than broad, and the costal margin is strongly arcuate, especially dis- 

 tally, so that the apex falls at about the middle of the lower half of the 

 wing and is roundly pointed ; cross-veins unite the principal nervures 

 where the radial vein forks at about three-fifths the distance from the base 

 of the wing.. The abdomen is subconical, tapering pretty uniformly almost 

 from the base, with pretty straight sides, the tip bluntly pointed. 



Length of body (without head), 3.2"""" ; breadth of abdomen near base, 

 Li""""; length of tegmina, 3'"™; breadth, 0.85™°'. 



Florissant, Colorado. One specimen. No. 5188 



