NORTH AMERICAN COLEOPTERA. 23 



26. <'. carbon atus u. sp.— Elongate, black, very opaque, more slender iu 

 the % with inconspicuous fine cinereous pubescence and suberect black bristles. 

 Antennse black, longer and stouter in the % , the last two joints passing the base 

 of the thoi'ax, about equal to the head and thorax in the 9, joints twice as long 

 as wide. Head and thorax very densely punctate, a few coarser punctures evi- 

 dent on the head, but less marked on the prothorax ; the thorax is a little longer 

 than wide in the %, not longer than wide in the 9> widest a little before the 

 middle, especially iu the % , sides rounded and more narrowed in front, obliquely 

 narrowed from the middle behind and not sinuate, feebly impressed behind the 

 middle, more distinctly each side at base, basal lobe broadly emarginaie, plica 

 moderate, the outer rudimentary one not evident. Elytra a little wider than 

 the thorax, moderately convex, parallel, gradually narrowed and rounded at tip. 

 broadly and feebly impressed before the middle, and with small, scattered, trans- 

 verse callosities slightly interrupting the strise, the latter ai'e fine, feebly im- 

 pressed and with elongate punctures, intervals flat, closely and strongly punctu- 

 late. Body beneath closely and strongly puuctulate, with very evident coarser 

 punctures intermixed, prothorax with submarginal lines distinct, reaching the 

 middle, prosternal lobe rather short and broadly rounded, or almost truncate in 

 front, posterior process short, lower surface strongly ascending, marginal lines 

 absent behind ; hind coxal plates narrowed externally with the free angles 

 rather strongly rounded. Legs black or piceous, varied with rufous at the joints, 

 tarsi rather slender and a little longer in the "J,, last joint longest. The % 

 genitalia have the middle piece slightly broader near the tip, which is rounded, 

 the lateral pieces are broad, rapidly acuminate at the tips, which are minutely 

 excurved and not barbed. Length, % .27 iuch ; 6.3 mm. ; 9 .30 inch ; 7.6 mm. 



One pair, Califoruia. Mr. Dike's collection. 

 A more elongate species than obscurus, more densely punctate and 

 more intensely black, with more slender antennse. 



27. C obscurus Lee. — Eather elongate or stouter in the 9, black, or lead 

 black, subopaque, clothed with distinct fuscous, brown or purple brown pubes- 

 cence and suberect bristles. Antennse black, serrate, stouter in the % , the 

 broader joints less than twice as long as wide, longer than the head and thorax, 

 more slender and a little shorter in the 9 • Head and thorax densely finely 

 punctate, with sparser coarser jiunctures intermixed, the thorax convex, as wide 

 as or wider than long, sides strongly rounded and narrowed in front, obliquely 

 less narrowed behind, sometimes feebly sinuate, impressed behind at middle and 

 on each side of the ba.sal lobe which is broadly emarginate and bisinuate, plica" 

 distinct and moderately long. Elytra a little witler than the thorax, moder- 

 ately convex, sides parallel, striae narrow, very feeblj- impressed on the disc 

 and apex, more distinctly at base especially and sides, punctures elongate, 

 closely placed, intervals flat, rather closely puuctulate. Body beneath distinctly 

 and rather closely puuctulate, with intermixed coar.ser punctures, shining and 

 pubescent; prothorax with the submarginal lines distinct, reaching in front of 

 middle, intercoxal process strongly asceudiug, hind coxal plates a little narrowed 

 externally, the angles strongly rounded. Legs black or piceous, with bases and 

 tips of joints narrowly or broadly rufous, tarsi with the last joint longest. 

 Length .26-.30 inch ; 6.2-8 mm. 



California. Henshaw, Horn, Ricksecker, Ulke. 



