NORTH AMERrCAN COLEOPTERA. 249 



the front, anteriorly broadly arcuate, margin entire with short cilife, disc mod- 

 erately coarsely and rather (closely punctured, median line smooth for a short 

 distance, basal channel moderately well defined. Elytra less coarsely i)unctured 

 than the thorax, but more closely, somewhat ru<;ulose along the middle, smooth 

 at sides of apex, sutural costa as usual, the first discal moderately distinct, esjie- 

 cially in the female, the other costse obliterated, suhmarginal costa well devel- 

 oped, usually extending two-thirds to base. Pygidiuni dissimilarly punctured 

 in the sexes. Metasternum densely punctured, the hair of moderate length, not 

 dense, much shorter in the female and sparser. Abdomen moderately closely 

 punctate at the sides, each puncture bearing a short hair, the last two segments, 

 especially in the female, conspicuously more coarsely punctate. Claws with a 

 median tooth, small in the male, long in the female. Last joint of maxillary 

 palpi fusiform, not impressed. Length .82 — .86 inch; 21 — 22 mm. 



Male. — Antennal club a little shorter than the stem, piceous. 

 Abdomen flattened at middle with a faint median linear impression, 

 penultimate segment impressed along its posterior margin, at middle 

 a feebly elevated, sinuous, transverse carina. Last segment feeblv 

 concave, a fine median linear impression. Pygidium a little broader 

 than long, the punctures coarse but not deep, the surface irregular. 

 Inner spur of hind tibia slender, two-thirds as long as the outer. 



Female. — Antennal club brown, much shorter than the funiculus. 

 Penultimate ventral segment arcuately impressed at middle. Last 

 segment broadly, but feebly emarginate. Pygidium somewhat coni- 

 cal, more protuberant near the apex, the punctures coarse and close 

 along the middle, sparser near the sides. 



Variations. — The three specimens before me agree in color and 

 differ only in the distinctness of the elytral costse, the male being 

 smooth. 



This species is difficult to place by means of any tabular division. 

 It seems nearly intermediate between some of the more rugose forms 

 of fiisca and the species of the present sub-group in the form of the 

 clypeus and its sculpture. The presence of a well defined channel 

 along the base of the thorax inclines me to place it here rather than 

 with _/'(/.scff. From the latter, which it resembles in form, it differs in 

 its generally coarser ])inictuation, the thorax being more coarsely 

 and closely punctate than ever occurs in fiisca. 



The form of the tooth of the male claws deserves especial mention. 

 The claw is feebly curved, the tooth rather small and median, formed 

 nearly like the tooth of a saw ; that is, the distal edge forms a right 

 angle with the edge of the claw, while the inner border is very ob- 

 tuse. 



Three specimens. North Carolina (Morrison). 



TRANS. AMER. ENT. SCO. XIV. (32) DECEMBER, 1887. 



