35 



Genus Oi'umala. Sorville (1831). 



Head pyramidal ; face very oblique. Antennae reaching the 

 apex of the prouotuui, more or less enlarged near the base ; the 

 joints prismatic. Eyes somewhat prominent, oblique, placed 

 near the front and close to the antennae. Pronotum usually 

 tricarinate, sometimes sub-cylindrical, and the carinae sub- 

 obliterated ; sides straigiit, parallel or nearly so, truncate in front, 

 truncate or obtusely rounded behind ; transverse impressions gen- 

 erally indistinct. Wing covers straight, lanceolate, sometimes 

 reaching to the tip of the abdomen, sometimes abbreviated. Pros- 

 ternum with a short, blunt protuberance. Anterior and middle 

 legs short ; posterior generally long and slender. 



Opomala brachypteua. Scudder. 



Brown,' dotted faintly above with black. A faint, dark stripe 

 extending from the lower border of each eye along the side of the 

 pronotum. Hind femora with a row of black dots on the upper 

 edge ; terminal lobe dark. Spines tipped with black. The female 

 is more uniformly brown than the male, with numerous minute 

 dusky dots ; wings and wing covers shorter than the male. 



Length, a little mon- than an inch. 



Genus CiiLOiiALTis. Harris (1841). 



Eyes rather short, somewhat acuminate at the apex, placed near 

 the vertex, oblique, and rather distant from each other. Back of 

 the. pronotum and head in one plane, horizontal. Head produced 

 in front between the antennae, in the form of a short, blunt pyra- 

 mid. Antennae short, filiform, sub-depressed, and joints sub- 

 distinct. Face oblique and straight. Pronotum short, compressed 

 at the sides, which are flat, straight and parallel, or very nearly so ; 

 tricarinate, the three carinie distinct but not elevated; transverse 

 incisions slight ; truncate in front, and truncate or sub-truncate 

 behind. Wing covers abl)reviated, shorter than the abdomen, ex- 

 cept in C7i. puuctulatd, whi'u they are about equal to it in length; 

 ovate-lanceolate. Prosternura unarmed, but slightly swollen. 



The species may be separated as follows : — 



I Br 



Female, j^recn, or pale brown; male, u;reun uljove . . viridis. 



own, without any ji^ret-n 2. 



Wing covers about as long as tlu; al)doniL'n . . piinrtulata. 

 Wing covers shorter than the abdomen . . . conspersa. 



