AMERICAN COMPONENTS OF THE TENTYRIIN^ 36 1 



Form oblong-oval, rather stout, less convex, highly polished, deep 

 black, the legs dark or subpiceo-riifous ; head small, evidently 

 narrower than an elytron, arcuate at apex with obsolete angles, 

 rather coarsely, very closely punctate, rufescent at apex ; pro- 

 thorax very short and transverse, fully four-fifths wider than long, 

 the sides subparallel, evenly and strongly arcuate to the abrupt 

 basal sinus, the punctures fine but strong, well separated, becom- 

 ing rather rapidly much larger and closer though not very coarse 

 and still slightly separated in about lateral fourth ; scutellum 

 moderate, transverse; elytra inflated, about one-half longer than 

 wide, fully three times as long as the prothorax and distinctly 

 wider at the middle, the sides evenly and rather strongly arcuate, 

 the apex obtusely ogival, the unimpressed, subeven series strongly 

 and rather closely punctured, the intervals with uneven single 

 series of punctures which are about half the size of the serial 

 punctures; abdomen not very finely, strongly and somewhat 

 sparsely punctured medially. Length 4.8 mm.; width 2.12 mm. 

 New Mexico (Fort Wingate) coarcticollis Csy . 



Form somewhat as in coarcticollis but more elongate and with much 

 finer elytral punctures, deep black, the legs piceous-black, rather 

 shining but not polished ; head distinctly narrower than an elytron 

 at the middle of its length, transversely suboval, the sides parallel, 

 the angles very broadly rounded, the apex arcuate ; punctures not 

 very small, strong, rather well separated; prothorax not more 

 than thi-ee-fifths wider than long, the sides subevenly and moder- 

 ately arcuate, becoming deeply sinuate and then parallel and 

 straight for a noticeable distance to the rectangular basal angles, 

 the punctures fine and moderately sparse, becoming gradually 

 moderately coarse, deep and slightly separated laterally ; scutellum 

 rather well developed, subtumid, transverse and punctate; elytra 

 inflated, one-half longer than wide, barely three times as long as 

 the prothorax and, at the middle, fully a fifth wider, gradually 

 ogival in apical two-fifths, the sides evenly and very evidently 

 arcuate to the rather acute and pronounced humeri, which are not 

 exposed basally, the basal line curving rapidly forward laterally, 

 the serial punctures very fine, not very close-set and but little less 

 fine laterally, the intervals with extremely irregular single series 

 of very minute punctures ; abdomen polished, feebly rugose, finely 

 but strongly, not closely punctured medially. Length 5.7 mm.; 

 width 2.4 mm. Utah (Marysvale), — H. F. Wickham. 



ludius n. sp. 



17 — Elytra gradually narrowed and with feebly arcuate sides at apex, 

 the tip very acute. Body elongate-oval, not very stout, convex, 

 feebly alutaceous, deep black, the legs dark rufo-piceous ; head 

 not quite as wide as an elytron, strongly, very closely punctate, 

 with a small elongate impunctate spot at the middle of the vertex, 

 the apex strongly arcuate from side to side, the sides strongly 

 arcuate with obsolete angles ; prothorax two-thirds wider than 

 long, the sides subevenly and rather strongly arcuate, somewhat 

 Proc Wash. Acad. Sci., September, 1907. 



