REVISION OF TENEBRIONID SUBFAMILY CONIONTIN^ 7 1 



anterior tibia; nearly as in difficilis ; epipleuraa nearly similar but 

 with the flanks of the elytra above them evenly and broadly 

 rounded in section and not prominent. Length lo. 0-10.3 trim'; 

 width 5.7-5.75 mm. (cf). Length 10.7 mm.; width 6.4 mm. 

 (?). Oregon compositus n. sp. 



14 — Erosions small, more or less isolated and punctiform, unevenly 

 distributed, generally better defined than in the following group 

 but never muricate 15 



Erosions of the elytra larger, generally confluent and poorly defined, 

 the general sculpture like that prevailing in Discodemtis iS 



15 — Body oblong-oval and parallel in form, not ventricose even in 

 the f ema le 16 



Body more rounded and ventricose in the female, the male generally 

 oblong-oval and more parallel 17 



16 — Form stout, convex, glabrous, deep black, strongly alutaceous 

 or subopaque, the elytra of the female much more shining; hy- 

 pomera with a few short hairs posteriorly but otherwise not ciliate 

 at the sides nor on the femora; head finelv but distinctly punc- 

 tured, rather closely toward the suture, the clypeus rather broadly 

 sinuate, with broad but obvious lateral sinuses, the apex not 

 reflexed but with the surface broadly impressed behind the 

 rounded apical lobes ; prothorax distinctly more than twice as wide 

 as its median length, much narrowed and deeply, circularly emar- 

 ginate at apex, with the angles right and blunt, the basal angles 

 only moderately prolonged, acute and sharp ; sides moderately 

 converging and feebly arcuate to before the middle, then more 

 converging and arcuate; surface moderately concavo-explanate 

 laterally, narrowly anteriorly, more broadly basally, the bead very 

 feeble, the punctures very minute and inconspicuous even later- 

 ally ; elytra but little longer than wide, nearly straight at the sides, 

 the margin acute and reflexed at the humeri, thence disappearing 

 as usual from a dorsal viewpoint, very irregularly and shallowly 

 punctate, the flanks rather abruptly inflexed, the under part much 

 less punctate, the epipleurae nearly impunctate, j^oHshed and 

 glabrous ; prosternum finely, sparsely punctate ; anterior tibiae 

 strongly, acicularly everted at tip. Length 9.2-11.0 mm. ; width 

 6.0-6.9 i^'ii' New Mexico (Las Vegas) congener n. sp. 



Form nearly as in congener but slightly narrower, deep black, gla- 

 brous, the anterior parts opaque, the elytra rather shining; head 

 minutely, indistinctly punctate, the clypeus very feebly sinuate 

 medially, the lateral notches subobsolete, the margin not at all 

 reflexed at any point but with the edge very slightly thickened; 

 prothorax shorter and more transverse but otherwise nearly similar, 

 the sides more strongly converging from the base and but little 

 more converging or arcuate anteriorly, the punctures extremely 

 minute and indistinct throughout, the basal angles much produced 

 and very acute; elytra nearly similar but more decidedly longer 



