40 Annals of the Carnegie Museum. 



rugose. Head large, in both sexes a little narrower than the anterior 

 edge of the pronotum; occiput ascending, transversely rugose or 

 wrinkled, separated from the vertex by a rather definite, but somewhat 

 interrupted, transverse carina, which extends from eye to eye near 

 their upper posterior margin; vertex even with the top of the eyes, 

 not at all (9 ) or only gently (cf ) depressed at middle, quite evenly 

 sloping downward anteriorly, and suddenly narrowed just in advance 

 of the eyes at the fastigium to the width of the frontal costa; latter 

 quite prominent between the antenna?, deeply sulcate, viewed laterally, 

 produced anteriorly'as far as the length of the rather large basal 

 antennal joints; ocellus' located high on the front, being on a line 

 with the lower edge of the antennae, the costa somewhat interrupted, 

 but in a manner continuous to the clypeus. Antennae rather slender 

 for a representative of this group, the basal joints somewhat flattened, 

 but nowise giving these appendages an ensiform appearance, about 

 fifteen-jointed. Eyes small, globular, the diameter about one-half 

 (cf ) or slightly less (9 ) than the length of the anterior margin of the 

 cheeks immediately below them. Pronotum with the anterior, pos- 

 terior, and lateral margins quite conspicuously tuberculately spined, 

 greatly expanding behind, the median carina quite strongly developed 

 on the anterior lobe and so profoundly severed by the transverse sulci 

 as to form two rather prominent triangular posteriorly directed teeth, 

 on the posterior lobe continuous, low and narrow, hind margin of disk 

 obtusangulate, remarkably thickened and provided along its upper 

 edge with about six tubercular spines on each side of the middle. 

 Tegmina and wings complete, a little longer than the abdomen in both 

 sexes; the former tapering, coriaceous, profusely, but not strongly, 

 veined, in the disk some of the cross-veins heavier and forming a series 

 of oblique carina?; the tegmina are also conspicuously marked by two 

 or three longitudinal series of hyaline spots, which are without the 

 characteristic veining of the other portions of the member. Hind 

 wings one-half longer than wide, pointed, rather sparsely veined. 

 Abdomen robust at base, rapidly and evenly tapering caudad. Hind 

 femora quite strongly compressed, the superior carina hirsute, scarcely 

 serrate, and not at all undulate; outer disk not regularly pinnate, 

 but instead, rather coarsely and irregularly squamose; genicular 

 lobes acuminate. Hind tibiae robust, about as long as the femora, 

 nine- to ten-spined externally, eleven- to twelve-spined internally. 

 Mesostefnum very broad, the interspace between the lobes fully 



