DYNASTIN.E 187 



elytra. The anterior tibiae are as in Ligyrodes, generally having 

 an obtuse fourth tooth and sometimes a slight prominence between 

 the second and third teeth. Three species may be described as 

 follows: 



Second and third alternate intervals of the elytra confusedly punctate 

 like the others 2 



Second and third alternate intervals with a more or less distinct single 

 row of coarse punctures 3 



2 Body oblong, stout, evenly and strongly convex, not very shining, 

 deep black, the under surface and legs barely picescent; head a little 

 less than half as wide as the prothorax, with dense and transversely 

 intricate rugulosity, the base smooth but with sparse punctures; 

 eyes small, not prominent; transverse ridge rather fine, broadly di- 

 vided, not attaining the sides; clypeus short, the very oblique sides 

 more strongly margined basally, the apex transverse, much les? than 

 half as wide as the base, with the obtuse angles scarcely at all rounded 

 and evident, the teeth short, obtuse, thin, the separating sinus oblique 

 in plane; prothorax scarcely one-half wider than long, the sides 

 broadly arcuate, narrowed but little anteriorly; basal angles rounded, 

 the side margins finely beaded; base transverse, unmargined, feebly 

 bisinuate; punctures sparse but strong throughout, rather less 

 sparse but scarcely differing otherwise laterad; scutellum rather 

 small, ogival, with a few minute punctures; elytra scarcely longer, or 

 not at all longer, than wide, two-thirds longer than the prothorax 

 and not evidently wider, very obtusely rounded at apex; punctures 

 relatively rather coarse, close-set and everywhere confused, except 

 in the coarse though scarcely impressed double series, where they 

 are very close-set; they are very shallow and annular throughout, 

 except toward the sides and apex in apical half, where they become 

 very fine and confused; pygidium finely, densely punctato-scabricu- 

 late, except medially, where it becomes sparsely punctate, a little 

 shorter, more convex and more broadly rounded at apex in the male 

 but not differing otherwise sexually; tarsi slender, short, the posterior 

 much shorter than the tibiae; last ventral with a broad smooth apical 

 margin in both sexes. Length (d 71 9 ) 13.7-14.2 mm.; width 7.5-7.8 

 mm. Georgia to Texas. Said to infest Indian corn. [Ligyrus 

 rugiceps Lee.] rugiceps Lee. 



Body smaller and less stout, much more shining, deep black; head similar 

 throughout; prothorax similar but a little shorter, the sides becoming 

 rather less parallel basally, the punctures very remotely scattered 

 and minute medially, less sparse and much more distinct toward the 

 sides; scutellum smooth and punctureless; elytra but little longer 

 than wide, barely wider than the prothorax and more than three- 

 fourths longer, circularly rounded in fully apical two-fifths; punc- 

 tures disposed as in rugiceps but everywhere very much smaller and 

 rather sparser; pygidium finely scabriculate only along the basal 

 margin, thence sparsely and not coarsely punctured to about the 

 middle, becoming densely and confidently so at the extreme sides, 



