Descriptions of Neiv or Little-known Orthoptera. 445 



AROEGAS, n. gen. 



Vertex somewhat convex, the fastigium prolonged triangularly, 

 attenuate rounded at tip and overhanging the frontal ; antennae 

 slender; prouotum oblong, twice as long as broad, not grooved, saddle- 

 shaped, wider across the centre than at apex or base, broadly rounded 

 behind, and covering only the base of the first abdominal segment; no 

 wings ; abdomen as long as the head and prouotum ; prosternum 

 simple ; coxae with a short sharp spine ; anterior and intermediate 

 tibiae moderately long, the former with an ovate tympanu-m ; fore 

 tibiae with three spines underneath on each side, posterior with a 

 double series above, simple underneath, femora simple ; supra-anal 



FIG. 5. Aroegas nigroornatus, $. 



lamina $ deeply scooped with the angles sharply dentiform ; cerci 

 short, thick, tapering into a sharp point : sub-genital lamina very 

 long, deeply and broadly grooved in the centre, narrowed from the 

 median part to the apex ; this narrowed part is very strongly recurved, 

 bluntly trifid at apex, and fits, when at rest, in the scooped-out space 

 of the supra-anal lamina. 



The general facies is that of Arytropteris of the pulchripes type, but 

 it is easily distinguished from this genus by the presence of well- 

 developed tympanum, and the shorter fore and intermediate legs. 

 The shape of the sub-genital lamina is very singular. I find no traces 

 of styles in the only example in the Collection. 



AROEGAS NIGROORNATUS, n. sp. 



$ . Straw-colour, with the antennae fusco-auuulate, a conspicuous 

 broad arcuate black baud on the top of the declivity of the anterior 



