LOCUSTIDAE — STENOPELMATINAE 5 9 



mesially or (on middle legs) apically, occasionally (Hadenoecus) 

 wanting on middle legs. Fore tibiae not sulcate above ; hind 

 tibiae with spines of two grades on both outer and inner margins 

 of upper surface. Outer valves of ovipositor unarmed above 

 before the apex. 



b^. Palpi long. Hind tibiae usually considerably longer than 

 the hind femora. Third hind tarsal joint only half or less 

 than half as long as the second. 



c^. Vertex obscurely bituberculate at apex. Last palpal 

 joint no longer or scarcely longer than the third, and cleft 

 beneath only apically. Middle coxae unarmed. Middle 

 femora with a feeble genicular spine on posterior margin. 

 Hind tibiae with more than four pairs of spurs. First hind 

 tarsal joint almost as long as the others together. Sub- 

 genital plate of male triangular and rather deeply and 

 narrowly emarginate. . . . Hadenoecus Scudder. 

 c^. Vertex not tuberculate. Last palpal joint distinctly 

 longer than the third, cleft beneath for almost its entire 

 length. Middle coxae spined mesially. Middle femora with 

 a distinct genicular spine on posterior margin. Hind tibiae 

 with only four pairs of spurs. First hind tarsal joint 

 generally a third shorter than the rest combined. Sub- 

 genital plate of male ample and broadly emarginate. 



Ceuthophilus Scudder. 



h '^. Palpi short. Hind tibiae shorter or at most but little longer 



than the hind femora. Third hind tarsal joint hardly shorter 



than the second, or (in Daihinia) wanting. (Lamination of 



middle coxae produced inferiorly to the semblance of a sj^ine.) 



c ^ Third palpal joint as long as fifth, the inferior cleft of 



the latter extending over only the apical half. Middle femora 



unarmed at tip or with a very feeble spine. Hind tibiae 



shorter or at least no longer than the hind femora, with few 



spines of the second grade on the upper surface, those of the 



first grade relatively numerous, at least in the 9 , more or 



less irregularly placed and of unequal length ; the calcaria 



three in number on each side, the uppermost generally a 



