AMERICAN COMPONENTS OF THE TENTYRIIN^ 283 



Tribe Cnemodini. 



There is no tribe closely related to the Cnemodini, although 



by the general form of the body, developed wings, large scu- 



tellum, extent and position of the epipleurce, form of the eyes 



and approximation of the hind coxae, it evidently has more 



affinity with the Eurymetoponini than with any other. We have 



apparently but one genus as follows : — 



Body parallel, convex, fully winged, the head moderate, rounded, 

 the eyes large, prominent coarsely faceted, but slightly emargi- 

 nated by the acute sides of the front, which are sometimes united 

 with the tine supra-orbital carina a short distance before them ; 

 sides strongly arcuate and converging for a short distance to the 

 epistoma, which is slightly advanced, with its sides converging 

 and deeply sinuate, separated from the front by a strongly ele- 

 vated, medially subinterrupted ridge, its apex bilobed, concealing 

 the labrum, the mandibles bifid at tip, broadly, deeply grooved 

 externally and with a peculiar alate porrect prominence of the 

 upper external edge ; mentum hexagonal, its apex feebly deflexed 

 and slightly sinuate ; maxilloe with very large flat ciliate and 

 rounded lobes, the palpi with the last joint oval ; antennaj very 

 long and slender, the two or three outer joints but little wider, 

 the eleventh pedunculate, oval, narrower and shorter than the 

 tenth, all the joints abruptly enlarged at their distal ends; pro- 

 thorax narrower than the elytra, narrowed toward base, very 

 feebly margined at the sides, the flanks continuously convex from 

 the pronotum through the propleura^ ; scutellum well developed, 

 elongate, narrowly rounded at tip ; elytra elongate, parallel, with 

 exposed rounded humeri, not in the least margined at base, the 

 epipleuraj occupying all of the narrowly inflexed sides and becom- 

 ing effaced or feebly defined toward base ; anterior coxas large, 

 globular, moderately separated, the process rapidly deflexed to the 

 hind margin of the prosternum, strongly and densely pilose, the 

 middle coxae very narrowly separated or subcontiguous ; hind 

 coxa) narrowly separated, transversely rectilinear, the metasternum 

 very long, with fine transverse ante-coxal grooves, the met- 

 episterna wide and only very slightly narrowed posteriorly, with 

 the suture distinct and straight ; legs long and rather slender, the 

 anterior tibi?e with an acute everted apical angle and a similar 

 acute external tooth just beyond the middle, the terminal spur 

 stout and distinct; tarsi long and slender, the claws very long, 

 evenly arcuate and gradually pointed Cnemodus 



The above rather full diagnosis of this singular genus is taken 

 from an undescribed species named angiistus below, and pre- 



remarkable character, not even suggested in any true Epitragid, the prosternum 

 of the male having a tumid central pubescent fovea completely obsolete in the 

 female ; the punctures are wholly effaced in the neighborhood of the fovea. 



