25 



expanding at the very tip and then but slightly in the d ; front margin 

 slightly convex, hind margin slightly and angularly excised; surface 

 uniformly rugulose, tectiform, especially in the V, the median carina 

 distinct but not prominent, lateral carinae wanting; the posterior lobe 

 separated from the anterior by a scarcely perceptible sinuate furrow, 

 the posterior itself distinctly divided in the middle by a transverse 

 furrow subiaarallel to the hind border severing the median carina ; 

 lateral lobes nearly twice as long as broad, narrowing downward, 

 the exterior edge very broadly angled, the posterior margin roundly 

 excised; prosternum with a blunt conico-cylindrical spine ; inner mar- 

 gin of mesosternal lobes broadly convex, the lobes subapproximate 

 in the c?, distant from each other by half their width in the ? ; 

 metasternal lobes approximate in both sexes. Tegmina linear, about 

 as long as the pronotum; wings wanting. Hind femora extending 

 nearly to (?) or. a little beyond (cT) the tip of the abdomen, the 

 superior edge unarmed; hind tibiae with their outer edges smooth, 

 the spines on either side equal ; first and third tarsal joints equal, the 

 second less than half as long as either of them. Abdomen in- 

 distinctly carinate throughout. 



The genus has an aspect not unlike that of Sphenarium, but it 

 belongs to the subfamily of Acrididse and appears to be somewhat 

 closely allied to Rhytidochrota. A. sphenarioides may be considered 

 as the type. 



Aptenopedes sphenarioides nov. sp. Green, the upper sur- 

 face a little infuscated in the male. Head with the whole front 

 flecked with fuscous or blackish punctse. Antennaj with the first two 

 joints pale or greenish, beyond growing testaceous, the apical third 

 blackish fuscous. Pronotum uniformly and dull rugulose, more 

 obscurely on the deflected lobes than above, like the head furnished 

 with very scattered delicate inconspicuous short white hairs and 

 with a white or very pale pink straight lateral stripe running from 

 the upper posterior border of the eye to the hind edge of pronotum; 

 this stripe is bordered more (c?) or less (?) distinctly with black be- 

 neath; lower edges of pronotum a little pale, especially in the male; 

 prosternal spine terminating bluntly. Tegmina reaching the end of 

 the first abdominal segment, white above, black below, in continua- 

 tion of the pronotal stripe; metapleura more or less distinctly striped 

 with black and white, in imitation of the tegmina. Hind femora green 

 exteriorly, more or less infuscated, especially above, in the female, the 

 outer carina obscurely marked with black, the space between this 



