June, i8 9 s.] Casey: North American Coleoptera. 69 



median spot posteriorly ; antenna; rather stout, not quite as long as the width of 

 the head. Prothorax obviously shorter than wide, narrowed somewhat from 

 very near the base, more rapidly and arcuately and with moderate serrules an- 

 teriorly, the apical sinuation narrow with the teeth small ; surface coarsely as- 

 perato-tuberculate anteriorly, smoother in basal two thirds, the sculpture becom- 

 ing coarsely subimbricate in the middle toward base, with the surface shining 

 and the median line finely impressed. Elytra much more than twice as long as 

 wide, nearly three times as long as the prothorax and just visibly wider, the 

 punctures coarse and close-set, subserial in arrangement, coarse, contiguous and 

 subconfluent on the declivity, the tubercles feeble, especially the inner. Abdo- 

 men finely punctulate, pubescent, the scattered larger punctures rather small. 

 Legs quite slender. Length 9.0 mm.; width 2.5 mm. Kansas, Iowa and 

 North Carolina gracilis, sp. nov. 



-6 — Pubescence distinct, decumbent. Sutural series rather impressed, the suture ele- 

 vated on the declivity. Head rather small, the eyes moderate in size. Elytral 

 punctures not serial in arrangement, but with traces of three fine raised lines. 

 Indiana and Kansas bicaudatus Say. 



7 — Prothorax emarginate at apex, fully as long as wide and with the usual terminal 

 teeth of the lateral series. Male. — Rather stout, cylindrical, shining, dark testa- 

 ceous-brown in color; antennae pale; surface virtually glabrous. Head moderate, 

 nearly two-thirds as wide as the prothorax, broadly, almost evenly convex, with 

 a large median impunctate area; transverse impression behind the clypeus deep 

 and distinct; eyes small and but moderately prominent; antenna; fully as long as 

 the width of the head. Prothorax fully as long as wide, the sides broadly arcuate, 

 becoming parallel only very near the base, converging anteriorly where the ser- 

 rules are prominent and close-set in less than apical half; apex narrowly sinuate, 

 surface tuberculose anteriorly, becoming smooth and polished in basal half and 

 almost sculptureless toward the sides but sparsely imbricatostrigose toward the 

 middle. Elytra short, one-half longer than wide, equal in width to the pro- 

 thorax, strongly but not very closely, confusedly punctate, more closely but 

 scarcely coalescently behind, the declivity very steep, more convex at each side 

 above but not tuberculate, the suture elevated. Abdomen finely, strongly and 

 densely punctulate, the scattered coarser punctures not visible, the pubescence even, 

 decumbent and rather dense ; last segment shorter than any of the preceding. 

 Hind tarsi very much longer than the tibios. Length 6.7 mm ; width 2.2 mm. 

 Texas ( El Paso) grandicollis, sp. nov. 



Prothorax truncate at tip, with the angles obtuse and rounded, without trace of pro- 

 cesses 8 



8 — Larger species, the prothorax much wider than long and trapezoidal in form; 

 Female. — Rather slender, cylindrical, shining, subglabrous, dark rufo-testaceous 

 in color. Head well developed, nearly ihree-fourths as wide as the prothorax, 

 the surface granose throughout, tumid posteriorly, the epistomal suture just be- 

 yond the middle of the length and impressed toward the middle, the epistoma 

 large; eyes very large, convex and prominent; antenna; obviously shorter than 

 the width of the head, with the club relatively very long, the five joints of the 

 funicle together barely equal in length to its first joint. Prothorax much wider 

 than long, the sides parallel and feebly arcuate nearly to the middle, then 



