252 FAMILY YI.— LOCUSTID^. 



length of the fore femora, ver}' stout at base, but gradually 

 diminishing in stoutness so that the distal third is slender 

 and sulj-equal and the whole less than three and a half times 

 longer than broad, the surface mostly glabrous, but on the 

 darker portions above beset not very sparsely with feeble 

 raised points the outer carina with about thirteen distant 

 unequal rather coarse spines, the longest shorter than the 

 tibial spurs (male) or almost unarmed (female), the inner 

 carina much less elevated than the outer, with equal abor- 

 tive denticulations numerous in the male, infrequent and 

 equidistant in the female, the intervening sulcus moderately 

 broad. Hind tibige rather slender, straight, nearly a sixth 

 longer than the femora. Hind tarsi much less than half as 

 long as the tibi«, the first joint not so long as the lest to- 

 gether, the second nearly three times as long as the third 

 and with it fully as long as the fourth. Cerci stout at base, 

 tapering throughout. Ovipositor with the basal third 

 rather stout, beyond equal and rather slender, nearly three- 

 fourths the length of the hind femora. 



Length of body: Male, 19 mm., female, 23 mm.; pro- 

 notum, male, 5.75 mm., female, 6.75 mm.; tore femora, 

 male, 10 mm., female, 10.6 mm.; hind lemora, male, 21.5 

 mm., female, 22 mm.; hind libiae, male, 24.75 mm., female, 

 25 mm.; ovipositor, 15 5 mm. 



GENUS Udeopsylla Scudder. 



Body heavier and stouter than in Ceuthophilus, with a 

 larger head. First joint of antennas larger and stouter than 

 the rest, as broad as long, compressed anteriorly; third 

 joint twice as long as second; remainder unequal; eyes 

 small; sub-pyriform, docked on the antennal border, glo- 

 bose; maxillary palpi rather long; first and second joints 

 equal and small ; third, more than equal to the preceding 

 together; fourth, little more than half as long as third ; fifth, 

 a little longer than third, somewhat curved, split along the 

 whole underside ; as in Ceuthophilus the pro-, meso- and meta- 



