AMERICAN COMPONENTS OF THE TENTYRIIN^ 5OI 



projecting subhorizontally backward, the metasternum much 

 shorter, with broader episterna, the abdomen subsimilar, except 

 that the sutures are not bent backward at the sides ; ^ legs rather 

 short, moderately slender, the anterior tibial very broadly dilated ex- 

 ternally at apex, with the spurs distinct and very unequal in thick- 

 ness; tarsi short, sparsely spinose beneath. [ Type^. delicatu- 

 lus Lee] Anepsius 



Body much more elongate and still larger, slightly convex, glabrous ; 

 head smaller, subquadrate, obliquely narrowed in anterior half, 

 the clypeus transversely truncate with rounded angles, almost cov- 

 ering the mouth-parts, the antennal prominences feeble but round- 

 ing inward posteriorly to the eyes, which are large, convex, some- 

 what prominent, subbasal, transverse, on the sides of the head and 

 only feebly and broadly sinuate anteriorly ; mentum rather small, 

 subquadrate, parallel, truncate, exposing all the maxillEe and most 

 of the ligula, the palpi rather long and slender, the last joint of 

 the maxillary elongate and obliquely truncate ; mandibles slender, 

 bifid at tip ; antennae very long, slender and filiform, with sparse 

 hairs, the outer joints not at all wider but becoming shorter, 

 the eleventh with a conoidal sensitive apical process, the third 

 joint most elongate, the basal much the stoutest, the remaining ten 

 joints exactly equal in width ; prothorax sharply margined at 

 the sides, the apex and base subtruncate, the latter very feebly 

 arcuate toward the middle ; scutellum large, transverse, truncate 

 and conspicuous ; elytra confusedly punctate, with narrowly 

 reflexed and acute margin, the epipleurie rather wide, flat, entire, 

 occupying the entire inflexed side, with the raised flat lower mar- 

 gin very narrow ; jDrosternum moderately separating the coxa^, not 

 much produced and narrowly rounded posteriorly, somewhat free 

 as in Anep 31715 ; middle coxae with distinct trochantin ; meta- 

 sternum large, fully as long as the first ventral, the episterna moder- 

 ately wide, the suture rectilinear, gradually approaching the sides 

 posteriorly ; abdomen nearly as in Anepsuis^ except that the fourth 

 segment is similar to the third and but little shorter; legs and 

 tarsi rather long and slender, the anterior tibiae linear, not dilated 

 apically, the spurs small but distinct, subequal, the tarsi with very 

 short sparse spinules beneath. [Type V. tenuicornis n. sp.]. 



Vacronus 



Body elongate, parallel, convex, the integuments harder and denser, 

 the size much larger, subglabrous ; head not wider than long, 

 obliquely narrowed from behind the middle to the apex, the latter 

 truncate, with the sides minutely anteriorly prominent, the clypeus 

 not quite concealing the mouth-parts, the mandibles bifid at tip ; 

 mentum rather small, tranversely oval, sinuato-truncate at tip, 

 exposing the maxilke but covering the ligula, the four palpi some- 

 what slender and elongate, the last joint elongate, obtriangular, 



'This singular abdominal peculiarity of Battiliodes foretells a somewhat 

 general character among the true Asidids. 



