366 Coleopterological Notices, VIL 



Subgenus IV. 

 Psomophus n. sg. 

 Antennal club darker in color than the stem. 

 Eighth antennal joint fully as long as wide. 



Elytra strongly ventricose 15 liaedillUS 



Elytra feebly ventricose; antennal club blacker 16 fatuus 



Eighth joint distinctly transverse, the club noticeably stouter. 



Antennae longer; joints three to seven all much elongated; hind body 



more inflated 17 impotens 



Antennae shorter and relatively stouter; joints three to seven not dis- 

 tinctly longer than wide, except the fifth which is invariably longer. 

 Hind body rather strongly inflated and shorter, the elytra much more 



broadly truncate at base 18 callidiis 



Hind body feebly inflated, the elytra more elongate, narrower and 



more evenly oval 19 de1>ilis 



Antennal club very stout, paler in color than the shaft 20 capitatus 



The species mississippicus of Zimmermann and consobrinus of 

 LeConte, which I have been unable to identify, will be alluded 

 to at the end of this revision. 



1. E. ventralis n. sp. — Somewhat stout, polished, impunctate, piceous- 

 black, the head becoming testaceous anteriorly ; elytra bright and pale rufous, 

 Islackish posteriorly ; legs and antennae throughout pale rufous ; pubescence 

 abundant and stiff on the pronotum, sparse on the head and elytra, long, pale, 

 stiff and suberect on the latter. Head nearly as long as wide, the eyes rather 

 large and convex but not prominent, extending to their own length from the 

 base and evenly continuous in curvature with the sides of the occiput, which 

 are convergent and arcuate to the neck, the latter deeply constricted, having 

 the bulbiform enlargement within the prothorax minutely asperulate ; front 

 not visibly impressed ; clypeus even and rectilinear at apex. Antennae very 

 long and slender, % as long as the body, the club very slender and elongate 

 but well differentiated ; second joint almost as long as the first but much nar- 

 rower, nearly cylindric, 2% times as long as wide and much shorter than the 

 next two ; two to four uniformly decreasing in length ; three to six equal in 

 width and slightly narrower than the second, feebly obconic and elongate ; 

 third 2}^, fourth 1'^, fifth 2, sixth 1% times longer than wide ; seventh 

 slightly thicker, very long, feebly thickened toward apex, more than twice as 

 long as wide ; eighth % thicker than the seventh and slightly shorter, obo- 

 voidal, ^2 longer than wide ; ninth and tenth just visibly thicker, obconic, 

 abruptly conic at the middle of the apex, J^ and 3^^ longer than wide respec- 

 tively ; eleventh not thicker, elongate, obliquely and gradually pointed, much 

 shorter than the two x^receding. Prothorax not quite as long as wide, parallel 

 and broadly rounded at the sides anteriorly, broadly constricted toward base, 

 fully 34 ^ider than the head, the subbasal impression and foveae distinct. 

 Elytra fully % longer than wide, 2}4 times longer than the prothorax and very 

 nearly twice as wide, widest and more narrowly rounded only slightly before 



