104 PROCEEDINGS OP THE AMERICAN ACADEMY. 



particularly an anterior bordering not reaching the lower margins and 

 thrusting back subdorsal stripes which are broadly separated by rufo- 

 luteous, all of which is sometimes very obscure ; legs luteous, the hind 

 femora externally tinged with rufo-fuliginous, in which fuscous scalari- 

 form markings moi'e or less feebly appear. The antennae are moder- 

 ately slender and the legs short. Fore femora considerably stouter 

 than the middle femora, as long as ((J) or less than a fifth longer than 

 ( 9 ) the pronotum, and considerably less than half as long as the hind 

 femora, the inner carina with two or three feeble denticulations ; fore 

 tibiae subuUate, considerably stouter than the middle tibiae. Middle 

 femora with 1-3 short spines on the front carina, the hind carina with 

 4-0 very short but not very slight spines ($ ) or 1-2 feeble denticula- 

 tions (9), besides a very short inferior depending genicular sjjine, at 

 least in the ? . Hind femora much shorter than the body, but con- 

 siderably more than twice as long as the fore femora, stout and heavy, 

 being in the ^ about two and a half, in the 9 about two and three 

 quarters time as long as broad, with a rather strong pregenicular con- 

 striction beneath in the ^, the upper carinate margin of the inner 

 surface with a series of distant denticulations, the outer carina almost 

 angularly elevated in the middle, armed, mostly beyond the middle, 

 with a strong serration and just before the genicular lobes with a short 

 arcuate compressed rather blunt triangular spine, serrate on its 

 proximal edge, as long as tlie tibial depth, followed by a nearly similar 

 but smaller tooth upon the genicular lobe ( J" ) or with a post-median 

 spine much shorter than the shortest tibial spurs, another pregenicular 

 spine of smaller size, and between them 6-8 spinules (9), the inner 

 carina with a uniform series of raised points ($), or with small den- 

 ticulations throughout, similar to these of the outer carina but with 

 no large spines (9); the intervening sulcus moderate. Hind tibiae 

 strongly and pretty regularly bowed (i^) or faintly arcuate (9), tri- 

 quetral, deeper than broad, only three fourths ( 9 ) or a little more 

 than three fourths {^) the length of the hind femora, armed beneath 

 with a single preapical spine besides the apical pair ; spurs sub- 

 opposite, in the ^ four pairs in number, the basal at about the end of 

 the proximal third of the tibia, markedly increasing in length toward 

 the tarsi, so that the proximal are only half as long as the distal, the 

 middle ones slightly longer than the tibial depth, set at an angle of 

 about 70° with the tibia and divaricating about 45° ; in the 9 six 

 pairs in number, the basal placed before the end of the proximal fourth 

 of the tibia and jnst beyond a slight but distinct constriction of the 

 tibia, the distal series as long again as the proximal, the inner series a 



