SCUDDER. NORTH AMERICAN CEUTHOPHILI. 101 



distances by a smaller one. Middle femora with 14 spines on the front 

 carina, most numerous in the 9 and the subapical the largest, the 

 hind carina similarly armed, but one spine genicular and the others as 

 numerous in the <J as in the . Hind femora much shorter than the 

 body, considerably more than twice as long as the fore femora, stout, 

 being in the $ less than three times as long as broad, with hardly any 

 subapical constriction, that is, tapering almost regularly to the apex, 

 the surface with no raised points, the outer carina pretty regularly and 

 rather minutely denticulate in the distal half or less, exclusive of the 

 geniculation (<J), or minutely denticulate throughout (9), the inner 

 carina similar to the outer, but in the $ more extensively denticulate 

 than the outer, the intervening sulcus narrow. Hind tibiae straight in 

 both sexes, distinctly shorter than the femora, the upper surface 

 rather broad in the <J and basally constricted, beneath with a longer 

 ( $ ) or shorter ( 9 ) series of median spines, besides the apical pair ; 

 spurs subopposite, the basal pair at the end of the proximal third of 

 the tibia (),* about as long as the tibial depth ($), or two to three 

 times as long as the tibial depth (9), set at an angle of about 50 

 (cJ) or 30 (9) with the tibia and divaricating as much, their tips 

 scarcely incurved ; inner middle calcaria not greatly longer than the 

 outer, less than half as long again as the others or as the (<) spurs, 

 nearly as long as the first tarsal joint. Hind tarsi much less than 

 two fifths as long as the tibia, the first joint not so long as the rest 

 together, the second but little longer than the third and with it a little 

 shorter than the fourth. Cerci rather slender and regularly tapering, 

 pointed, considerably shorter (<) or considerably longer (9) than 

 the hind femoral breadth. Ovipositor about two thirds as long as the 

 hind femora, its upper margin feebly arcuate, the apical two thirds 

 subequal, the apex slightly upturned and very acuminate, the teeth of 

 the inner valves long, aciculate, the distal arcuate. 



Length of body, $ 12 mm., 9 11.5 mm. ; pronotum, $ 3.5 mm., 

 9 3.25 mm.; fore femora, 4 mm., 9 3.6 mm. ; hind femora, 8.75 

 mm., 9 F.6 mm.; hind tibiae, $ 8.3 mm., 9 7.25 mm.; ovipositor, 

 5.2 mm. 



4 $, 1 9. Ft. Wingate, N. Mex. (Shufeldt), U. S. Nat. Mus. 



The species is most nearly allied to G. devius, from which it differs 

 principally in its smaller size and the armature of the femora. 



The single 9 I have seen has four pairs of spurs on one tibia, the basal 

 pair at the end of the proximal fourth of the tibia, while the other tibia has but 

 a single non-opposite pair in the middle of the tibia. It is further anomalous in 

 the excessive length of the spurs, in contrast to the $ . 



