262 GEO. H. HORN, M. D. 



47. li. iniplicitsi n. sp. — Oblong-oval, convex, rufotestaceous to brown 

 head and thorax always darker, moderately shining. Clypeus moderately deei)ly, 

 acutely emarginate, the border moderately reflexed, surface closely rather 

 coarsely punctate, front more densely punctate. Thorax narrowed from base to 

 apex, more obliquely in front, the margin somewhat irregular, scarcely crenate. 

 with short cilia?, the punctures coarse, regularly, but not closely placed, the 

 median line usually smoother, a distinct channel along the base externally. 

 Punctures of elytra as coarse as those of the thorax, more shallow, closer, stel- 

 late and somewhat rugose, discal costfe very feeble, the submarginal usually 

 more distinct. Pygidiuni sparsely indistinctly punctate. Metasternum densely 

 punctate, the hair long and abundant % . shorter and sparser 9 • Abdomen in- 

 distinctly punctate at the sides, the last two segments more coarsely punctate. 

 Claws arcuate, a small acute median tooth % , larger in 9 ■ Last joint of maxil- 

 lary i>alpus fusiform, not impressed. Length .55 — .68 inch ; 14 — 17.5 mm. 



Male. — Aiitennal club longer than the stem. Abdomen flattened 

 and slightly concave at middle. Penultimate segment (fig. 25) with 

 a semicircular depression on each side of which is a short, oblique 

 tuberosity. Last segment convex, sometimes with a slight median 

 channel. Inner spur of hind tibia half the length of the outer, 

 stout and slightly curved. 



Female. — Antennal club a little shorter than the funiculus. Py- 

 gidium more elongate than the male, slightly gibbous near the apex. 

 Metasternum less hairy, the hind tarsi slightly shorter. 



Variations. — The full color of this species is : elytra brown, 

 head and thorax more nearly piceous, body beneath paler than above. 

 Specimens occur with the elytra red-brown, in which case the sides 

 of the thorax are paler. Another specimen is as rufotestaceous as 

 glaberrima. 



This species resembles balla, but the clypeus is more acutely and 

 deeply emarginate, the surest method of separating these closely 

 allied species is by reference to the male characters. It is likely that 

 specimens of this species are mixed in most cabinets with balia and 

 comans, and I think they partly constitute the series standing as de- 

 cidua in the LeConte cabinet. 



Occurs in Canada, Iowa, Missouri, Nebraska and Louisiana. 



48. JL. balia Say. — Oblong, distinctly broader behind, brown, head and tho- 

 rax slightly darker than the elytra, surface moderately shining. Head coarsely 

 and moderately densely punctured, front convex, with erect hairs. Clypeus 

 broadly not deeply emarginate, margin narrowly reflexed. Thorax narrowed in 

 front, widest at middle, very slightly narrowed posteriorly, more obliquely nar- 

 rowed in front, the margin entire ciliate, punctures coarse not closely, somewhat 

 irregularly placed, usually a smooth median space, a distinct ba.sal channel ex- 

 ternally. Elytra a little more finely punctured than the thorax and quite densely 

 with a somewhat scabrous appearance, the discal costie very indistinct. Py- 



