SCUDDER. NORTH AMERICAN CEUTHOPHILI. 103 



on the posterior side, the geuicular lobes very small. Hind femora 

 very broad and incrassate, even the extremity stout, both inferior 

 carinae feebly denticulate, rarely with any conspicuous spines. Fore 

 tibiae unarmed above, enlarged in the male ; middle tibiae armed above 

 with several pairs of spines besides those beneath ; hind tibiae stout, no 

 longer than hind femora, armed beneath with a single apical spine 

 besides the apical pair and above with lateral spines of two classes : 

 a larger series of generally long stout spines, longer than the calcaria, 

 and, especially in the 9> becoming longer and more crowded apically, 

 the 46 spines of one row not greatly divergent from those of the 

 other ; and minute denticulations occupying the interspaces, at least on 

 the proximal half of the tibia and the proximal free portion, but, at 

 least in the 9 , commonly absent from the distal half of the tibia ; the 

 three pairs of apical calcaria are not widely different in length. Hind 

 tarsi short, much less than half as long as the tibiaa, the first and fourth 

 joints, and the second and third joints, respectively subequal, the latter 

 together much shorter than either of the others. Ovipositor equal in 

 breadth throughout, when viewed laterally scarcely or not taperiug in 

 the basal half. 



Table of the Species of Phrixocnemis. 



Hind tibiae of male strongly bowed ; distal hind tibial spurs of male as 

 widely separated as the proximal trnculentus. 



Hind tibiae of male straight or almost straight; distal hind tibial spurs 



of male much more closely approximated than the proximal. 

 Nearly uniform in coloring; vertex at tip, between upper bases 

 of antennae, bituberculate ; four pairs of hind tibial spurs in 



the male validus. 



Distinctly particolored ; vertex at tip, between upper bases of 

 antennae, not bituberculate ; five pairs of hind tibial spurs in 

 the male bellicosus. 



PHRIXOCNEMIS TRUCULENTUS, sp. nov. 



Extreme apex of vertex with a slight depression. Body glabrous, 

 pale luteous, becoming rufo-luteouson the dorsum, where it is heavily 

 marked with blackish or blackish fuscous, particularly on the posterior 

 margins of the segments, the abdominal segments almost wholly 

 brownish fuscous with only an anterior luteous stripe, the meso- and 

 metanotum more rufo-luteous than blackish fuscous, and the pronotum 

 rufo-luteous above, luteous on the sides, with heavy fuscous markings, 



