NORTH AMERICAN COLKOPTERA. 251 



densely. Thorax narrower in front, sides posteriorly nearly parallel, in front 

 oblique, the margin entire, with short distinct cilife, disc moderately convex, the 

 punctures small, sparsely but equally i)laced, a slight depression of the base on 

 each side. Elytral punctures equal to those of the thorax, more closely placed, 

 surface slightly rugulose on each side of the suture, the costte distinct but feebly 

 elevated, the submarginal distinct posteriorly. Pygidium sparsely punctate, 

 smoother near the apex. Metasteruum densely punctate, the hair moderately 

 long and close; sides of abdomen with sparse punctures bearing short hairs. 

 Claws curved, the tooth moderate in size and median % . Last joint of maxil- 

 lary palpi short, fusiform, not impressed. Length .66— .72 inch ; 16.5—18 mm. 



Male. — Antennal club nearly a third longer than the entire t^teni. 

 Abdomen i^lightly flattened at middle, penultimate segment with a 

 short, feebly elevated, transverse ridge a short distance in front of 

 the posterior margin. Last segment very slightly concave. Inner 

 spur of hind tibia two-thirds the length of the outer and broader. 



Variations. — The two male specimens before me do not vary, 

 except slightly in color and size. 



In this species the clypeus is more feebly emarginate than usual 

 in those with the punctures of its surface dense and the border nar- 

 rowly reflexed. On the other hand the antennal club of the male 

 is unusually long, exceeding that of any species of the /((-sea group. 

 The facies and sculpture are very like a small jusca. 



Occurs in Maryland and Iowa. 



37. Li. f'raterna Harris. — 01)long, scarcely broader behind, rufotestaceous. 

 fuscous or piceous, shining. Clypeus moderately emarginate, the border nar- 

 rowly reflexed, surface densely punctured, the front more coarsely less densely. 

 Thorax gradually narrowed from base to apex, the sides feebly arcuate, the mar- 

 gin entire or slightly irregular, rarely slightly crenate, a slight impression of 

 the middle of the base each side, surface variably punctured, the punctures mod- 

 erate in size, never very coarse. Elytral punctures finer than those of the tho- 

 rax, more closely placed, somewhat rugulose each side of the middle, the costse 

 usually very feeble, the submarginal feebly distinct posteriorly. Pygidium 

 sparsely finely and indistinctly punctate. Metasteruum densely punctured, the 

 hair not long nor dense, shorter in the female. Abdomen sparsely punctate at 

 the sides, the last two segments more coarsely. Claws curved, the tootli strong 

 and median. Last joint of maxillary palpi fusiform, not impressed. Length 

 .59 —.70 inch ; 15 — 18 mm. 



jNIale. — Antennal club equal to or slightly longer than the fu- 

 niculus. Abdomen slightly flattened at middle, penultimate segment 

 impressed at middle and slightly granulate, a feeble oblique tuber- 

 osity each side. Last segment deeply concave and smooth, the apex 

 slightly emarginate. Inner spur of hind tibiae moderately long, 

 shorter than the outer, but less slender. 



