78 



length ; terminal joints sub-eqnal, rather short ; labial palpi proportionally 

 longer ; ultimate joint longest. Pronotum short, but longer than the head, 

 compressed at the sides ; sides of the anterior lobes sub-parallel ; posterior 

 lobe diverging ; the median carina on the anterior lobes indistinct and obtuse; 

 on the posterior lobe it is elevated into a sharp crest, regularly curved on 

 the top ; lateral carinae sub-distinct on the posterior lobe, obliterated on 

 the anterior lobes ; the three transverse incisions distinct, the posterior one 

 is bent abruptly forward in the middle, around the front point of .the crest; 

 anterior margin obtusely rounded ; posterior margin acute-angled in the male, 

 right-angled in the female. Elytra narrow, extending beyond the extremity 

 of the abdomen ; wings nearly^ as long as the elytra. Legs long ; the femora 

 slender ; the tibiae stout, pilose. The prosternum not spined ; the anterior 

 portion somewhat transversely tumid ; pectus narrow. 



A. Iiii-tipes, Thos., Geol. Surv. Terr., 1870, 278. 



S.yn., Oryllus liirtipes, Say, Amer. Eut., Ill, PI. xxxiv. — Le Conte's eel., I, 78, 

 PI. xxxiv, Fig. 1. 



The vertex extends oHiquely upward in front of the eyes, about equal to 

 the length of the latter, acute-angled at the apex; a slight transverse impression 

 between the upper angles of the eyes ; not margined, and without foveolse. 

 Frontal costa rather narrow, slightly expanding below, more or less distinctly 

 sulcate from the apex downward; .lateral carinae somewhat distinct, nearly 

 straight, slightly diverging ; the face is gradually widened from the eyes to the 

 clypeus. The pronotum as described in the generic description. Posterior 

 femoi'a slender, but slightly enlarged at the base, equaling or passing the ab- 

 domen ; all the legs are covered with minute hairs. 



Color. — Pale-green, without any distinct spots. Head and elytra green, 

 the former sometimes with lighter and darker shades. The pronotum varies 

 in color from a greenish-yellow to a pale-brown, the abdomen generally cor- 

 responding. The elytra are generally of a uniform pale-green, though some- 

 times they are marked with indistinct spots of darker green. Wings pale 

 greenish-yellow on the basal third ; the apical third pellucid ; the middle 

 third occupied by a broad, transverse, fuscous band, diminished and curving 

 inward on the posterior border. Antennae red. 



Dimensions. — 2 Length, 1.3 inches; elytra, 1.12 inches; hind femora, 

 0.75 inch; hind tibijis, 0.75 inch. ^J Length, 1 inch. 



Colorado, Wyoming (Thomas). 



