R.UTELIN/E 55 



polished throughout, without trace of the very coarse close sculp- 

 ture seen in obesula; pygidium feebly but more evenly convex and 

 with the subapical prominence very feeble and obtuse. Length 

 (9 ) 10.8 mm.; width 5.6 mm. Kansas. . . . quarternaria n. subsp. 



Fourth elytral ridge not differing from the others 10 



10 Body larger in size and generally dark in color. Black throughout, 

 the pronotum with feeble paler tints laterally, the bottoms of the 

 elytral sulci pale and the hind femora flavescent to wholly dark 

 red-brown above, black beneath, with entirely pale legs, excepting 

 the lower edge of the hind femora, the met-episterna always pal- 

 lescent and submetallic, the pronotum brightly metallic toward the 

 sides, this pale area gradually contracting to the middle of the base; 

 head black and dull, densely sculptured, greenish at base, the clypeus 

 nearly as in obesula; prothorax large, trapezoidal, one-half wider 

 than long, smooth and very shining, the punctures everywhere very 

 sparse and not coarse, sometimes a little closer near the sides, the 

 basal bead always entire; median sulcus fine and very feeble, ob- 

 solete basally, the lateral fossae rather deep and distinct but much 

 smaller in size than in the first section of the genus, the deep rounded 

 sublateral pit widely isolated; scutellum irregularly and in part 

 densely punctate, the punctures shallow, almost punctureless 

 toward base; elytra notably elongate, two-fifths longer than wide, 

 not quite one-half wider than the prothorax, feebly cuneiform, 

 with arcuate sides, the edge vertically expanded basally; transverse 

 lines at the bottom of the sulci rather feebly defined ; pygidium almost 

 evenly, feebly convex, shining, not tumid near the apex, the trans- 

 verse irregular sculpture not dense and less interlacing than in the 

 preceding; anterior tibiae with the tooth at about the base of the 

 apical process. Length (9) 10.8-11.8 mm.; width 5.4-5.8 mm. 



Texas. Six examples. texana n. sp. 



Body smaller but almost similarly stout in form. Black, the met-epi- 

 sterna pallescent, the hind femora with a large apical spot toward 

 the upper side pale; pronotum metallic and sometimes pale laterally; 

 head nearly as in the preceding but more shining; prothorax generally 

 rather less than one-half wider than long, trapezoidal, the sides feebly 

 prominent near apical third, thence straight to very feebly sinuate 

 to the acute tip of the prominent apical angles, the basal moderately 

 rounded; surface variably, generally rather strongly but not densely 

 punctate, the sulcus very feeble, obsolete at apex and basally, the 

 lateral fossae usually evident though small and shallow; scutellum 

 discretely though closely and shallowly punctate; elytra much shorter 

 than in texana, about a fourth longer than wide, rather distinctly 

 tapering, with arcuate sides, always pale tawny-flavate in color; 

 pygidium with the transverse interlacing sculpture rather strong and 

 somewhat close-set throughout, distinctly tumid medially near the 

 apex. Male smaller and slightly narrower than the female, the elytra 

 frequently infumate laterally, the pronotum more closely and con- 

 spicuously punctate though similarly metallic near the sides and 

 with the erect stiff pubescence closer; pygidium similar. Length 

 (c?) 8.0-10.0 (9 ) 9.2-11.0 mm.; width (cf ) 3.8-4.8, (9 ) 5.0-5.8 mm. 



