DYNASTIN^E 169 



middle; punctures not coarse, shallow, annular, simple and deeper 

 suturally, the four double series separated by flat intervals, all dis- 

 tinct, broadly confused elsewhere but not at all close-set; pygidial 

 punctures rather coarse, deep, closer basally than apically; hind tarsi 

 very short, about two-thirds as long as the tibiae. Length (cf) 

 17.0-19.8 mm.; width 8.6-10.8 mm. Kansas (Hamilton Co. and 

 Fort Dodge) and Colorado. Six examples puncticauda Csy. 



Body (cf ) much smaller, a little more inflated posteriorly, similar in 

 coloration and nearly as shining, the legs barely less than black; 

 head and clypeus nearly similar; prothorax much shorter, very 

 nearly twice as wide as long, the sides rather more strongly rounded; 

 punctures not quite so sparse and larger, being subequal to those 

 of the head, whereas in the preceding they are very much smaller, 

 except toward the sides; scutellum smaller, much more acute and 

 triangular, having a few distinct though not coarse punctures; 

 elytra slightly elongate, relatively wider, being fully a fifth wider 

 than the prothorax, less obtusely rounded at apex, the surface 

 less polished, perfectly even throughout, the punctures similarly 

 annulate and very moderate in size, rather less sparse, the four 

 double series and the sutural more impressed series similar; coarse 

 punctures of the pygidium rather less sparse; hind tarsi more slender, 

 about three-fourths as long as the tibiae; larger claw of the anterior 

 tarsi only moderately broad, the inner ramus slender, gradually 

 acuminate and extending as far as the tip of the larger ramus, 

 prolonged in line with the claw margin, the larger ramus obliquely 

 pointed, causing a marked divergence of the two rami; in puncti- 

 cauda the larger claw is larger and very much broader, the small 

 ramus very slender and much shorter than the larger ramus, which 

 is more obtusely pointed, with its inner outline more rounded, so 

 that the sinus separating the two rami is smaller and narrower; in 

 both species the slender ramus is in direct prolongation of the edge 

 of the claw and does not diverge in direction. Length (cf ) 15.0 

 mm.; width 7.8 mm. Mexico. [Dyscinetus picipes Bates nee 

 Btirm.j *ebeninus n. sp. 



9 Elytral punctures small but deep, simple, not annuliform; pygidium 

 only partially scabriculate. Body stout, oblong, rather convex, 

 shining, deep black, the under surface and legs only just visibly less 

 than black; head well developed, distinctly more than half as wide 

 as the prothorax, finely, sparsely punctate; clypeus strongly trans- 

 verse, trapezoidal, the sides less oblique and more arcuate, the apex 

 more broadly and more feebly sinuato-truncate, the angles much 

 more broadly rounded and the margins all much thicker and less 

 elevated than in the preceding section of the genus; surface similarly 

 declivous antero-laterad, but almost completely sculptureless, a 

 few small punctures distinct near the fine suture, but elsewhere they 

 are extremely minute; antennae dark rufous; prothorax very nearly 

 twice as wide as long, the sides strongly, evenly arcuate, only very 

 slightly converging from the broadly rounded basal angles to the 

 apex; punctures everywhere sparse, small but distinct medially, 

 rather strong and deep toward the sides; scutellum acutely ogival, 



