Bruner: Saltatorial Orthoptera. 71 



carinated at middle, its lateral edges straight and converging gently 

 forward, the extreme apex truncate and separated from the costa by a 

 transverse ridge which is elevated at the center. Frontal costa 

 prominent between the antennae, where it is about one-half wider than 

 the vertex, plane, or minutely and sparsely punctulate, suddenly 

 lowered at the ocellus and below, where it is sulcate, its sides pinched 

 at the transverse facial depression; lateral or facial carinje prominent, 

 straight, divergent, and reaching the base of the clypeus at its outer 

 angles, apparently continuous as prominent longitudinal ridges on 

 the mandibles. Antennae black, robust, a trifle longer than the head 

 and pronotum together, the apical four joints pallid. Pronotum 

 selliform, its anterior lobe cylindrical, the posterior lobe flattened 

 above, and with its sides rather strongly divergent, the last transverse 

 sulcus located at about the middle, the median carina plainly apparent 

 on the hind, sub-obliterated on the anterior, lobes; anterior margin 

 somewhat rounded at its middle, the hind margin subangulate. Teg- 

 mina and wings fully developed, reaching beyond the apex of both 

 the hind femora and the abdomen, rather sparsely veined, especially 

 on the apical two-fifths. Hind femora robust, not reaching the apex 

 of the abdomen; anterior and median legs small, the femora but little 

 enlarged; the hind tibiae and tarsi lengthily hirsute, the latter with 

 the second joint two-thirds as long as the first, the former eight-spined 

 interiorly, seven-spined externally. Prosternal spine robust, short, 

 its apex broadly rounded; interspace between the mesosternal lobes 

 about as wide as the lobes themselves, the inner margins of which 

 are broadly rounded. 



General color of insect above dark bruneo-olivaceous, below and the 

 front tinged with pale testaceo-ferruginous. Wings largely deep 

 cerulean, the veins apically fuliginous and the intervening membrane a 

 little infuscated. 



Length of body, 9, 39 mm.; of pronotum, 7.5 mm.; of tegmina, 

 34 mm.; of hind femora, 18 mm. 



The only specimen at hand, the type, comes from Cayenne, French 

 Guiana, where it was taken in February, 1917, by S. M. Klages. C. 

 M. Ace. No. 5873. 



Genus Bucephalacris GIglio-Tos. 



Bucephalacris Giglio-Tos, Boll. Mus. Zocil. Anat. Comp. Toiino, IX, no. 184, 

 p. 30 (1894); Bruner, Ann. Carnegie Mus., VIII, p. 91 (191 1). 



