SCUDDER. NORTH AMERICAN CEUTHOPHILI. 61 



fore femora, feebly arcuate, the base moderately stout, the distal three 

 fifths equal and moderately slender, the tip considerably upturned and 

 very acuminate. 



Length of body, $ 11.5 mm., 9 10 mm.; antennae (est.), $ 32 

 mm., 9 31 mm.; pronotum, $ 4 mm., 9 4.25 mm.; fore femora, 

 $ 5 mm., 9 4.5 mm. ; hind femora, $ 12.5 mm., 9 11.25 mm.; hind 

 tibiae, $ 13.5 mm., 9 H-7 mm.; ovipositor, 4.75 mm. 



1 $, 2 9 Lexington, Ky., June 28, S. Garman. A single imper- 

 fect $ in the National Museum without locality (Missouri?) probably 

 belongs to this species. 



24. CEUTHOPHILUS NIGRICANS, sp. nov. 



Body glabrous, blackish fuscous with obscure rufo-luteous markings, 

 becoming pallid luteous and more distinct on the abdomen ; they con- 

 sist almost wholly of a sprinkling of small roundish spots and dots, 

 more profuse and elongated on the abdomen, but there is besides a 

 very obscure mediodorsal line or stripe on the pronotum ; excepting 

 on the under surface of the femora, the femora and tibiae are dark 

 fuliginous and the outer side of the hind femora very dark castaneous, 

 heavily infuscated in the apical half, blackish at tip, and with deep 

 and heavy fuscous scalariform markings. The antennae are slender 

 and at least in the basal portion blackish fuscous, and the legs are 

 rather short, though the hind legs are relatively much longer in the 

 female than in the male. Fore femora not stouter than the middle 

 femora, much less than half as long as the hind femora, particularly 

 in the female, and very little longer than the pronotum, the inner 

 carina with one or two short spines. Middle femora similarly armed 

 on the front carina, the hind carina with one or two spines besides a 

 short genicular spine. Hind femora shorter (^) or longer (9) than 

 the body, somewhat more than twice ($) or about three times (9) as 

 long as the fore femora, in the male stout and tapering pretty regularly 

 to the genicular lobes, about two and three quarters times longer than 

 broad, the middle of the distal half of the inner surface above with a 

 small cluster of raised points, in the female much slenderer and with 

 the apical fourth subequal, the outer carina uniformly elevated, deli- 

 cately serratulo-spinous through most of its extent ((), or with a few 

 distant spinules in the outer half (9), the inner carina armed as the 

 outer but somewhat more delicately (c?) or with a few raised points 

 (9 ), the intervening sulcus moderate. Hind tibiae somewhat longer 

 than the femora, straight in both sexes, armed beneath with a single 

 subapical spine besides the apical pair ; spurs subopposite, the basal 



