DYNASTIISLE 145 



longer than the stem, which is longer than in protenta; prothorax 

 large, a little narrower than the elytra, narrowed anteriorly, the 

 basal angles broadly rounded; base immarginate as usual, feebly, 

 truncately lobed medially, rather strongly, sparsely punctate, less 

 sparsely laterad; scutellum with a few punctures, pale, the edges 

 dark; elytra about a fifth longer than wide, broadly circularly 

 rounded at tip, the punctures not coarse but well impressed, rather 

 sparse, the three geminate series evident, the outer often scarcely 

 traceable; pygidium convex, rather strongly and closely impresso- 

 . punctate, the erect hairs moderate. Female smaller and shorter 

 than the male, the head smaller, the clypeus trapezoidal, with 

 straighter sides, the eyes smaller; prothorax nearly similar but with 

 more rounded sides, which are more convergent anteriorly; elytra 

 with coarser but not denser sculpture, the geminate grooves coarser 

 and deeper; sides at the middle prominently arcuate and narrowly 

 deplanate; pygidium glabrous, finely and sparsely punctate medially, 

 finely, feebly scabrous laterad and basally; metasternum more 

 coarsely punctate but much less pubescent. Length (cf ) 12.0-15.0, 

 (9) 1 1. 8 mm.; width (cf) 6.5-7.5, (?) 7- mm - Missouri, Kansas, 

 Oklahoma and Texas. Eight males and one female. 



rufifrons n. sp. 



Prothorax shorter, but little less than twice as wide as long, the head and 

 eyes less developed 6 



6 Form (cf) oblong-oval, convex, rather shining, only moderately 

 stout, the color pale yellow-brown, with the head black and the 

 clypeus obscure rufous; head half as wide as the prothorax to slightly 

 less, rather finely but deeply, sparsely punctate, the eyes separated 

 by obviously more than twice their width though prominent; 

 clypeus trapezoidal with arcuate sides and apex, the latter moder- 

 ately reflexed, the obtuse angles rounded, the surface closely but 

 shallowly punctate, the suture obsolescent; antennal club distinctly 

 longer than the stem, curved as usual; prothorax with the sides 

 broadly arcuate and feebly converging from the rounded basal 

 angles to the apex; punctures sparse, rather fine, more distinct 

 laterad; scutellum very acutely ogival, with a few small punctures; 

 elytra a fifth longer than wide, the punctures rather strongly im- 

 pressed, well separated, confused, lineate laterally, the three gemi- 

 nate series and feeble costules evident; pygidium convex, sparsely 

 punctate, and rather closely subscabrous, the erect hairs only 

 moderate in length and not dense. Female shorter and stouter 

 than the male and darker red-brown in color, the head notably 

 small, two-fifths as wide as the prothorax, the eyes still more separ- 

 ated, the clypeus nearly similar; antennal club very much shorter 

 and not as long as the shorter stem; prothorax more rounded at the 

 sides, the sparse punctures rather stronger; elytra rather more 

 strongly but similarly and not closely punctate, the feebly convex 

 costae of the geminate series more conspicuous; lateral edges at the 

 middle prominently though broadly rounded and very distinctly 

 explanate; pygidium glabrous, shining, less convex, the sculpture 

 T. L. Casey, Mem. Col. VI. Oct. 1915. 



