158 ORTHOPTEKA. 



fuliginous, or with all the veins obscure. Hind femora not banded externally, but marked internally and 

 below as in H. neglectus. $ abdomen bright ferruginous. Hind tibiae red. 

 Length of body, S 16, $ 25 ; of antennae, S 9, $ 8 ; of pronotum, c? 4, $ 5-5 ; of tegmina, <J 18, 2 22 ; 

 of hind femora, <$ 10, $ 14 millim. 



Hab. Mexico, Eslava, Jalapa (0. W. Barrett'. 6 2), Amecameca (C. C. Deam: 2 )• 



This may be the insect referred to by Rehn as Trimerotropis monticola (Trans. Am. 

 Ent. Soc. xxvii. p. 97) and again as T. fascicula (I. c. p. 227). 



26. HippisCUS montanilS, Thomas. 

 (Edipoda montana, Thomas, Rep. U.S. Geol. Surv. Terr. v. pp. 462, 463 (1872) 1 ; Syn. Acrid. 



N. Am. pp. 129, 130 (1873) 2 ; Glover, Illustr. N. Am. Ent., Orthopt. t. 12. fig. 12 (1872) 3 . 

 Hippiscus montanus, Bruner, Canad. Ent. xvii. p. 12 (1885) 4 ; Sauss. Addit. Prodr. (Edip. p. 170 



(1888) 5 ; Scudd. Psyche, vi. pp. 273, 361 (1892) 6 ; Cat. U.S. Orthopt. p. 35 (1900) 7 . 



Hab. North America, from north of the United States frontier to Arizona and 

 New Mexico 1_7 . 



This species, although it occurs over a wide range, is local in its distribution. So 

 far as the writer knows, H. montanus frequents sandy localities. It certainly reaches 

 Mexican territory. 



LEPRUS, Sauss. 



Leprus, Saussure, Rev. et Mag. Zool. (2) xiii. p. 398 (1861) ; Prodr. (Edip. p. 96 (1884); Scudder, 

 Psyche, ii. p. 75 (1900); Cockerell, Ent. News, xiii. pp. 305-307 (1902). 



This genus of locusts belongs to the austral region of North America, where its 

 representatives appear to be confined to mountainous regions and to rocky slopes on 

 which the vegetation is not too dense. While the individuals vary somewhat among 

 themselves, in both wing-length and colour, they seem to separate easily into distinct 

 species or at least into well-marked forms. Seven such are included here. 



Table for separating the Species of Leprus. 



A. Hind wings with the disc yellow. 

 b. Form very robust. 



c. Larger : the pronotum decidedly verrucose or warty . . . . 1. elephas, Sauss. 



cc. Smaller : the pronotum granulose 2. corpulentus, Sauss. 



bb. Form more slender. 



c. Size medium or small. (Pacific coast.) [3. intermedins, Sauss.] 



cc. Very large. (New Mexico and Colorado.) [4. wheeleri, Thomas.] 



AA. Hind wings with the disc blue. 



b. The sexes more nearly equal in size; the tegmina rather regularly 

 banded. 

 c. Tegmina lighter, conspicuously banded and mottled to the 

 apex. Posterior lobe of the pronotum only once and one- 

 half the length of the anterior one [5. interior sp. n.] 



