74 



semi-transparent toward the apex. Wings pellucid, with pale rufous nerves. 



Dimensions. — Length, 0.U3 inch; elytra, 5 inch; posterior femora, 

 0.5" inch; posterior tibiae, 0.42 inch. 



Wyoming Territory (Thomas). Figured, Glover., Ills. Am. Ent. Orth., 

 PL xiii. Fig. 13. 



€IIUYS®ClHR.AO]¥, Fascli. 

 PoJiswm, Heyer; Gomj)hocerus, F'lsch , olim ; Chorthippus, Fieb.; ChloinUis, 



Harr., Scudd. 



Shape much like Opomala and Pyrgomorpha, to which it is closely 

 allied. Eyes rather short, somewhat acuminate at the apex, placed near 

 the vertex, oblique, and rather distant from each other. The back of the 

 pronotum and head in one plane, horizontal. Head jjroduced in front 

 between the antennae in the form of a sliort Ijlunt ])yramid. Vertex rather 

 broad between the eyes, triangular in front, slightly convex, without foveolffi, 

 sub-emarginate. Frontal costa broad, either sulcate or partially sulcate, 

 expanding and fliding below: lateral carinse distinct, somewhat divergent; 

 face oblique and straight. Antennae short, filiform, sub-depressed, and joints 

 sub-distinct. Clypeus and labrum narrow. Pronotum short; compressed 

 at the sides, which are flat, straight, and parallel or very nearly so; tricari- 

 nate, the three carinse distinct but not elevated; transverse incisions slight ; 

 truncate in front, and truncate or sub-truncate behind. Elytra abbreviated, 

 shorter than the abdomen, except in Ch. punctidatum, where they are about 

 equal to it in length ; ovate-lanceolate. Middle legs longer than the anterior 

 pair. Prosternum unarmed, but slightly swollen. 



Synoptical table of the species. 



A. Elytra less than half the length of the abdomen in the female ahdominalis. 



AA. Elytra half as loag, or more than half the length of the abdomen . . 



a. Female green or pale brown ; male green above vlrUlis. 



<ia. Brown without any green : 



h. Elytra about as long as the abdomen punctulatum. 



hh. Elytra shorter than the abdomeu conspersum. 



€li. a1)(losBtiisaM!>i; sp. nov. 



Female. — Large size ; body elongate ; elytra very short. Vertex blunt, 

 short, not expanding in front of the eyes, convex; margins not elevated, 

 obtuse. Face moderately obhqtie ; frontal costa flat, not sulcate, sometimes 



