NORTH AMERICAN COLEOPTERA. 13 



tion the genus is closely related to Dromaeolus, from which it differs 

 ill the simple tarsi and very broad clypeal base. The eyes do not 

 narrow the antennal groove. 



S. peotorosus Lee. — Form robust, cylindrical, slightly narrower behind, 

 brown or piceous. subopaque, pubescence extremely short and sparse ; antennae 

 not extending beyond the hind angles of the thorax, flattened, first joint stout, 

 as long as the next three, second small, partly concealed, third one and a half 

 times the length of the fourth, joints 4-10 gradually very little shorter, the outer 

 joints a little wider than long, eleventh oval longer than the tenth ; head con- 

 vex, coarsely and densely punctured ; clypeus twice as wide at base as the dis- 

 tance to the eyes, apex very slightly emarginate ; thorax a little longer than 

 wide, sides arcuate in front, straight and parallel posteriorly, hind angles rather 

 obtuse, not carinate, a slight depression along the lateral margin, disc convex, 

 sometimes slightly flattened along the middle with a shallow, but broad depres- 

 sion deeper posteriorly and sometimes smoother, surface densely and rather ru- 

 gosely punctured ; elytra striate, the intervals convex in their entire length, 

 densely rugosely punctured ; prosternum coarsely but very sparsely punctured, 

 the triangle more coarsely and densely; metasternum coarsely, but sparsely 

 punctured ; coxal plates and abdomen more finely and densely ; hind tarsi with 

 the first joint as long as the next four. Length .30 - 32 inch ; 7.5-8 mm. 



As observed by Bonvouloir this species has considerable resem- 

 blance in form and sculpture to Hi/lochares nigricornU. 



Occurs in Ohio, Illinois and Missouri. A specimen in my cabinet 

 was collected under the bark of Shellbark Hickory. 



S. erraiis n. si). — Form cylindrical, slightly narrower at apical third, color 

 ferruginous brown, feebly shining, very distinctly clothed with short fulvous 

 pubescence; antenuie as long as the hind angles of the thorax, the first joint 

 stout, as long as the next three, second small partly concealed, but as long as the 

 fourth, third as long as the next two and more than twice as long as wide, joints 

 4-10 subequal in length, but gradually more slender, eleventh nearly as long as 

 the preceding two ; head convex, densely punctured, a distinct carina extending 

 from the base of the clypeus to the occiput ; clypeus very little narrowed at base, 

 not twice as wide as the distance to the eyes, apical margin truncate ; thorax a 

 little wider than long, sides arcuately narrowed in front, very slightly arcuate 

 posteriorly, the hind angles short, a distinct submarginal groove ; disc convex, 

 very slightly flattened at middle, a very vague median depressed line, surface 

 densely punctured, on the deflexed sides more sparsely ; elytra vaguely sub- 

 striate, the surface moderately densely subrugosely punctured ; prothorax be- 

 neath coarsely, but not densely punctured, the triangle more opaque ; metas- 

 ternum coarsely not densely punctured ; abdomen more finely and densely ; first 

 joint of hind tarsi three-fourths the length of the tibia and longer than the next 

 four joints. Length .28 inch ; 7 mm. 



The charactei-s in which this species^differs from pectorosxis might 

 almost be considered generic but I prefer to consider them allowable 

 modifications within the genus rather than to increase the already 



