70 OETHOPTEEA. 



prominent and snlcate throughout, the sides diverging from a point a little below the ocellus to the 

 clypeus. Pace when viewed from the side moderately oblique, straight. Pronotum with the lateral 

 carinse nearly parallel on the front, and considerably diverging on the hind, lobe, the last transverse 

 sulcus profound, situated about the middle, cutting all three carinas ; front edge straight, the hind edge 

 broadly angulate. Tegmina and wings extending beyond the tip of both the abdomen and hind femora 

 in the two sexes ; upper portion of the discal field of the tegmina provided with regular transverse veins 

 which form rather large cells ; the area just beneath irregularly veined, but in some specimens showing 

 a tendency towards the formation of an obscure intercalary vein. 



Green above, but with the sides of the head, the pronotum, a portion of the pleura, and the tegmina, except 

 the dorsal area, brown or brownish, the latter with indications of scattered dots of a still darker shade. 

 Lateral carinae of the pronotum on the anterior lobe bordered with a line of black, which crosses over to 

 the dorsal area on the hind lobe, thus maintaining the uniform width of the dorsal green stripe. Hind 

 femora greenish-testaceous, becoming slightly darker apically ; tibiae brownish testaceous. Lower side 

 pale yellowish. 



Length of body, d 1 18, $ 26 ; of antennae, <$ 10, $ 9; of pronotum, & 3-5, $ 5; of tegmina, tf 17, $ 21*5; 

 of hind femora, tf 12, 5 16 millim. 



Rah. Mexico, Medellin in Vera Cruz (Rev. T. Heyde). 



Five males and two females, captured in the month of September. 



CORDILLACRIS, Rehn *. 



Stenobothrus , Thomas, Rep. U.S. Geol. Surv. Terr. v. p. 80 (1873) (part.). 



Oxycoryphus, Thomas, Proc. Dav. Acad. Nat. Sci. i. p. 251 (1876). 



2 Ochrilidia, Bruner, Proc. U.S. Nat. Mus. xii. p. 52 (1890). 



Alpha, Brunner, Rev. Syst. Orthopt. p. 121 (1893) ; McNeill, Proc. Dav. Acad. Nat. Sci. vi. 



pp. 245, 246 (1897) ; Scudder, Proc. Dav. Acad. Nat. Sci. viii. p. 23 (1900) ; Scudd. & Ckll. 



op. cit. ix. p. 26 (1902). 

 Cordillacris, Rehn, Canad. Ent. xxxiii. p. 271 (1901). 



This is another Truxaline genus characteristic of the arid and semiarid regions of 

 the Rocky Mountains and southward. While the collections before me lack repre- 

 sentatives of this group, it is known that at least one, and possibly the two other 

 described species occur in Mexican territory. 



Table for separating the Species of Cordillacris. 

 A 1 . Larger. Median carina of the pronotum cut much behind the 

 middle. Disc of the tegmina provided with rather small dark spots. 



b\ Posterior tibiae in part red or reddish 1. occipitalis, Thorn. 



ff. Posterior tibiae testaceous [2. cinerea Bruner 1 



A 2 . Smaller. Median carina of the pronotum cut very little behind the 

 middle. Disc of the tegmina provided with large dark blotches 

 which run together [3. crenulata, Bruner.] 



* The name Cordillacris, Rehn, should take the place of Alpha, Brunner, which is preoccupied in 

 Hymenoptera (see anted, p. 29). 



