380 Coleopterological Notices, V. 



pubescence rather long, stiff and sparse, snbrecnmbent but longer erect and 

 bristling on the abdomen, especially beneath. Head small, evenly convex ; 

 eyes large, not prominent ; anteiinse about one-half longer than the head, the 

 second joint longer and narrower than the first and as long as the next two, 

 the latter not wider, five to seven gradually wider, eight and nine subeqiial, 

 abruptly strongly transverse, twice as wide as long ; tenth short, bluntly 

 ogival. Protkorax twice as wide as long, the sides strongly divergent from 

 apex to base, evenly arcuate and continuous in curvature with the sides of the 

 elytra; base broadly evenly and strongly arcuate throughout; disk sparsely 

 feebly, subasperately punctate. Elijtra slightly wider than the base of the 

 prothorax, one-half longer than the latter, two-thirds wider than long, 

 broadly, angularly emarginate at apex ; disk evenly convex. Abdomen short, 

 as broad at base as the elytra ; sides convergent and feebly arcuate ; fifth 

 segment longer than the iourth. Legs short. Length 0.9 mm. ; width 0.5 mm. 



Pennsylvania. 



The club of the antennae is stouter than m Jtavicorne, and the 

 eighth joint is much more transverse. The single type has the 

 abdomen contracted. 



S. claTiger n. sp. — Stout, suboval, convex, strongly shining, black 

 throughout, the legs piceous ; antennje pale toward base, the large club 

 piceous-black ; head minutely, sparsely, the pronotum a little more strongly, 

 asperately and rather closely punctate ; elytra strongly and closely imbricate ; 

 abdomen more coarsely imbricate, the lines finer, the sculpture of the fifth 

 tergite extending very nearly to the apex ; pubescence rather coarse, moderate 

 in length and density. Head strongly deflexed, evenly convex, wider than 

 long and fully three-fifths as wide as tlie prothorax ; eyes large, attaining the 

 prothorax ; antennae one-half longer than the head, the second joint as wide 

 as the first and a little longer, as long as the third and fourth, third slightly 

 elongate, fourth scarcely longer than wide, fifth but little thicker, quadrate, 

 sixth decidedly thicker, one-third wider than long, seventh still much wider, 

 transverse, sixth to ninth rapidly and evenly increasing in width, the latter 

 more than twice as wide as long, tenth as wide as long, very obtuse, as long as 

 the two preceding, ninth joint more than twice as wide as the first. Prothorax 

 fully twice as wide as long, the sides arcuate and strongly convergent from 

 base to apex ; base very strongly, broadly arcuate, fully three-fourths wider 

 than the apex ; disk strongly, evenly convex. Elytra as wide as the base 

 of the prothorax, much longer than the latter ; sides feebly convergent and 

 arcuate toward base ; disk slightly longitudinally prominent along the sides 

 toward apex. Abdomen, when contracted, scarcely as long as wide, subquad- 

 rate, shorter than the anterior parts, slightly narrower than the elytra, the 

 sides feebly convergent toward apex ; border moderate ; fifth segment longer 

 than the fourth. Tarsi slender. Length 1.0 ram. ; width 0.65 mm. 



Iowa (Keokuk). 



This species is larger and still broader than nugator, and diifers 



