204 



ocellus strongly projecting, not channeled. Pronotiim moderately broad 

 above, tricarinate ; lateral carinfe cut thrice by the transverse furrows. 

 Elytra not passing the abdomen, narrow ; apex rounded, dotted with fuscous 

 in the middle at the base. Wings hyaline, densely reticulate. Posterior 

 femora moderately broad, not slender at the apex. Eyes approach each 

 other at the vertex. 



Length, 0.68 inch. 



Mexico (Saussure). 



Division II. — Body compressed. Head acute. Posterior sulcus of the 

 pronotum situated about the middle. Antennse filiform, sub-acute (sub- 

 clavate ?) at the apex. Approaches Gomphocerus. 



O. monteztiina, Sauss., Rev. et Mag. ZooL, XIII (1861), 316. 



Sleuder, much compressed, green, with a fuscous dorsal stripe, and a 

 stripe and spots of the same color on the sides. Head longer than the pro- 

 notum, conical, and acutely trigonal; rostrum flat, margins elevated and 

 divided by a carina, but not foveolate ; face much deflexed, with four distinct 

 carinse, the lateral straight, the median sub-parallel, somewhat approximate 

 at the ocellus. Eyes narrow, elongate, oblique. Antennse elongate, filiform, 

 incrassate near the apex. The three carina of the pronotum cut by the 

 middle transverse sulcus, somewhat approximate, sub-parallel ; the lateral 

 carinse in front of the middle slightly sinuate ; the posterior sulcus situated a 

 httle behind the middle. Elytra dilated in front, elongate-ovate, transparent- 

 fuscous, posterior margin opaque ; the front ornamented in its first part with 

 a fuscous fascia, and a sub-marginal green vitta next the base ; mediastine 

 are prolonged beyond the middle of the margin ; scapular and discoidal areas 

 dilated, parted by scalariform veinlets; the externo- and interno-median areas 

 narrow, scalariform-reticulate. Wings an obscure fuscous, densely reticulate. 

 Posterior femora quite slender; tibiae fuscous. Abdomen of the male very 

 slender, the sub-anal plate elongate, compressed, acuminate. 



Length, 0.92 inch. 



Mexico (Saussure). 



O. tibiali!^, AValk., Cat. Dermap. Salt., IV, 787. 



Male and female. — Ferruginous, tawny beneath. Disk of the vertex 

 and of the fore part of the pronotum ta\vny. Tip of the vertex lanceolate, 



