454 GEOLOGICAL SURVEY OF THE TERRITORIES. 



C. fpiseus, noY. sp. 



Head quite large j occii)ut eleYated. Dark gray, "with fuscous aud 

 yellowish spots. 



Female. — Occiput unusually couycx aud prominent; seen from the 

 side, the top of the head rises considerably above the disk of the pro- 

 notum; lateral carinse of the face but slightl^^ divergent. Posterior 

 lobe of the pronotum densely punctured. Elytra passing the abdomen 

 one-fourth their length. Upper and lo'^er valves of the ovipositor 

 slender, without any lateral angulations, not much excavated. Pos- 

 terior femora passing the abdomen. Prosternal spine short, obtuse, 

 and slightly transverse. 



Color. — Face lurid, with numerous small, black spots. Occiput aud 

 pronotum gra^', with a slight brass}' tinge, irregularly spotted with 

 black : behind each eye, reaching to the last cross incision of the prono- 

 tum, is an interrupted, broad, i^iceous stripe; the sides of the i)rono- 

 tum below this are somewhat lurid. Elytra dark gray; nervules whit- 

 ish, marked somewhat regularly with subquadrate black or i'uscous 

 spots, not confined to the middle field, but extending equally above aud 

 below, becoming dimmer toward the extremity, but distinct. Wings 

 (not spread in the only specimen seen) appear to be dusk}' toward the 

 apex. Posterior femora with three yellowish bands ; rest of the disk 

 black, sulcus beneath, and interior carina bright red ; tibii^ purplish- 

 red beneath, with a pale ring near the base ; spines black ; legs hairy. 

 Yenter yellowish. 



Dimensions. — Length to tip of the elytra, l.OS inches ; elytra, .70 

 inch ; posterior femora, .52 inch ; posterior tibia?, .43 inch. 



Ohio, (from Mr. Dodge's collection.) 



Pezotettix,* Burui 



Including the new species herein described, there are eleven species 

 belonging to this genus found in the United States that have been deter- 

 mined and named, four of which are found west of Missouri, to wit: 

 P. Borckii, Stal., P. incta^ Thos., P. obesa, Thos., and P. Kehrascencis, 

 Thos. 



P. obesoj nov. sp. PI. II, fig 13 and 14. 



Prosternal spine very short and obtuse; body of the female robust,fleshy; 

 elytra and wings wanting. 



Vertex broadly sulciAe, the raised margins slightly angulate in 

 front of the eyes, and continuous with the margins of the frontal 

 costa ; frontal costa broad, fiat, and slightly sulcate at the ocellus, 

 not reaching the clypeus; lateral carinas distinct but not prominent. 

 Pronotum short, expanding slightly posteriorly, truncate; the median 

 carina distinct, continuous ; lateral carina? scarcely distinct en the 

 posterior lobes, more distinct on the front lobes ; transverse impressed 

 lines indistinct ; truncate in front and behind ; the posterior mar- 

 gin straight like the posterior margin of an abdominal segment, (in 

 fact, the parts of the thorax look almost exactly like the abdominal seg- 

 ments,) not covering the meso-notum, bnt extending only to the middle 



* Walker (Cat. Derinap. Salt.) has restored PorfJ6»frt,Latr., wliieb probably has priori- 

 ty, but I retain Bunneister's name, as we thus do away with a number of SN'uonyms. 

 This genus docs not appear to be well defined, and it is extremely difficidt to deter- 

 mine the line of demarkation between it aud Caloptenus. I am of tlie opinion that tho 

 posterior lateral marjjius of the jironotum will atford a good character, as tho trno 

 Fezolcttlgi which I have seen appear to have these straight without an entering angle 

 a: the humerus. 



