SCUDDER. — NORTH AMERICAN CEUTHOPHILI. 59 



and the abdomen is mostly marked with alternate longitudinal bars 

 of luteous and fuscous, the latter prevailing dorsally; legs luteo-cas- 

 taueous, the hind femora distinctly but not heavily marked with fuscous 

 in scalariform patterns. Legs not very long. Fore femora broader 

 basally than the middle femora, much less than half as long as the 

 fore femora, and only a fifth longer than the pronotum, the inner 

 carina with a short spine besides a long preapical spine. Middle 

 femora armed with three spines on the front carina, the preapical very 

 long, the hind carina with only a couple of very short spines besides 

 the long genicular spine. Hind femora longer than the body, two and 

 a half times as long as the fore femora, very stout but with the distal 

 portion so produced that the apical fourth is equal, the whole three 

 times as long as broad, the surface covered everywhere on the darker 

 portions, but especially on the stouter part of the femora beyond the 

 middle and within as well as without, with raised points closely crowded, 

 the outer carina elevated, armed in the middle third with a series of 

 about five spines, sometimes iuequidistant, distally increasing in length, 

 the last and to some extent the others bent-arcuate, about as long as 

 the tibial spurs but coarser, followed by a rapid narrowing of the 

 femora and on this narrow portion by 4-5 minute serrulations, the 

 inner carina pretty regularly and minutely but not closely spinulate, 

 the intervening sulcus broad. Hind tibia? feebly arcuate, somewhat 

 longer than the femora, armed beneath with a single subapical spine 

 besides the apical pair ; spurs subopposite, the basal at the end of the 

 proximal fourth of the tibia, half as long again as the tibial depth, set 

 at an angle of about 45° with the tibia and divaricating 90-100°, their 

 tips incurved; inner middle calcaria considerably longer than the 

 outer, fully twice as long as the others or as the spurs, and as long as 

 the first tarsal joint. Hind tarsi about two fifths as long as the tibiae, 

 the first joint hardly as long as the rest together, the second twice as 

 long as the third, but with it scarcely as long as the fourth. C'erci 

 moderately slender, rather short, probably little exceeding in length 

 the femoral breadth. 



Length of body, 13 mm. ; pronotum, 5 mm. ; fore femora, 6 mm. ; 

 hind femora, 15 mm.; hind tibiae, 16 mm. 



1 ^. Georgia, 



This species is very closely related to 0. uhleri, differing in its 

 markings, which are less sprinkled, and in the more pronounced spiuu- 

 lations of the hind femoral carinte in the male. 



