386 Coleopterological Notices, IV. 



and nearly straight in basal half; striae rather coarse, deep, punctured at the 

 bottom. Length 2.3-3.3 mm. ; width 1.15-1.55 mm. 



Illinois; Texas. 



A distinctly marked species, apparently rather abundant. My 

 first specimens were received some years since from Mr. F. M. 

 Webster. 



In this species the pronotal scales are not arranged like those of 

 corpulentus and discoideits, where they radiate from a central point. 

 The punctures toward the middle of the pronotum are also different, 

 being transverse and not rounded. 



2 S. discoideus Lee. — Proc. Am. Phil. Soc, XV, p. 169 (Pachytychius). 

 Robust, oval, convex, black, the legs slightly rufo-piceous ; scales 



moderate in size, closely decumbent, widely overlapping, white or 

 yellowish-white, the middle of the pronotum broadly, and a large 

 sutural basal and small lateral median area of the elytra, both un- 

 even, clothed more sparsely with blackish scales ; recurved setae of 

 the elytra in the form of elongate concolorous scales and scarcely 

 visible under low power. Beak in the male thick, punctured, 

 squamulose, dull, evenly, feebly arcuate, but slightly longer than 

 the head and prothorax, with the antennae inserted at apical third, 

 in the female much longer, a little more slender, smoother, less 

 punctate, evenly, moderately arcuate, two-thirds as long as the 

 elytra, with the antennae inserted at apical two-fifths; antennae long, 

 the second funicular joint three-fourths as long as the first and fully 

 as long as the next two. Prothorax two-fifths wider than long, 

 parallel, evenly and strongly rounded on the sides, constricted be- 

 hind the apex. Elytra at base one-fourth wider than the prothorax, 

 a little more than twice as long ; sides arcuate, convergent behind 

 and feebly sinuate in the male ; disk convex, the striae becoming 

 coarse, deep and strongly punctate in the basal darker area. Tarsal 

 claws slender, feebly divergent, connate in basal fourth. Length 

 3.0-3.2 mm. ; width 1.6-1.75 mm. 



Illinois. A well-known species of rather large size and obese 

 form. One badly preserved male before me, taken by Mr. Wick- 

 ham, at Elko, Nevada, cannot be distinguished from the eastern 

 forms except by its slightly shorter beak. 



3 S. corpulentus Lee. — Proc. Am. Phil. Soc, XV, p. 170. 



Robust, convex, rather broadly oval, black, the legs bright rufous; 

 scales of the upper surface elongate-oval, narrowly truncate at apex, 



