106 OKTHOPTEKA. 



d\ These foveolae well-defined, decidedly angulate. Lateral 



carinae of pronotum delicate. Hind tibiae testaceo- 



ferruginous. 



e 1 . Fastigium deeply sulcate, with elevated carinae which meet 



in an acute angle in front. Conspicuously mottled and 



streaked [6. tenuicarina, Scudd.] 



e 2 . Fastigium shallowly sulcate and provided with a central 

 carina ; blunt in front. Colour uniform reddish -brown, 



not greatly mottled and streaked [7. mescalero, Rehn.] 



d 2 . These foveolse ill-defined, oblong or rounded. Lateral carinae 



of pronotum somewhat interrupted mesially. Hind tibiae 



glaucous or dull bluish. 



e 1 . General colour ferruginous, without markings, or only 



inconspicuously mottled and streaked with lighter and 



darker shades 4. salina, sp. n. 



e 2 . General colour testaceo-cinereous, very conspicuously 



mottled and streaked with lighter and darker shades . . 5. meridionalis, sp. n. 



[l. Stirapleura ornata, Scudd. 



Dociostaurus ornatus, Scudd. Rep. U.S. Geogr. & Geol. Surv. W. 100th Merid., App. JJ, p. 507 



(1876) * ; Bruner, Third Rep. U.S. Ent. Comm. p. 58 (1883) 2 . 

 Stirapleura ornata, McNeill, Proc. Dav. Acad. Nat. Sci. vi. pp. 270, 271 (1897) 3 ; Scudd. Cat. 



Orthopt. U.S. p. 28 (1900) \ 



Hdb. North America, New Mexico 1_4 .] 



2. Stirapleura decussata, Scudd. 



Stirapleura decussata, Scudd. Rep. U.S. Geogr. & Geol. Surv. W. 100th Merid., App. JJ, p. 510 



(1876) x ; Cat. Orthopt. U.S. p. 27 (1900) 2 . 

 Psoloessa color adensis, Thomas, Proc. Dav. Acad. Nat. Sci. i. p. 252, t. 36. fig. 34 (1876) 3 . 



Hab. North America 1_3 , from New Mexico and Arizona northward throughout the 

 Eocky Mountain region and eastward on the plains at least to the 100th meridian. — 

 1 Mexico (Bruner). 



3. Stirapleura pusilla, Scudd. 



Stirapleura pusilla, Scudd. Proc. Amer. Acad. Arts & Sci. xxxv. pp. 52, 53 (1899) 5 ; Cat. Orthopt. 

 U.S. p. 28 (1900) 2 . 



Hob. North America * 2 , New Mexico, Arizona, California {colls. Scudder & Bruner) ; 

 Lower California, Cape San Lucas (Br. Palmer, in coll. Scudder).— Mexico, Mexico 

 City (C. C. Beam, coll. U.S. Nat. Mus.). 



This insect appears to vary rather more than usual, and the material before me may 

 possibly represent at least two distinct species. 



