AMERICAN COMPONENTS OF THE TENTYRIIN^ 3O9 



those of the intervals widely spaced ; abdomen finely, sparsely 

 punctate medially. Length 6.5 mm.; width 2.95 mm. Prob- 

 ably southern California edax n. sp. 



Body decidedly less stout, convex, elongate-oval, rather shining, dark 

 blackish-castaneous, the legs rather bright rufous ; head rather 

 finely, irregularly and moderately closely punctured, the sides 

 moderately converging and evenly arcuate before the eyes , pro- 

 thorax much less transverse, scarcely more than two-thirds wider 

 than long, widest behind the middle, the sides almost evenly 

 arcuate, becoming feebly sinuate near the apex, which is much 

 narrower than the base and rather deeply sinuate, the punctures 

 moderately large, deep and well separated, becoming much 

 coarser, dense and longitudinally confluent toward the sides; 

 scutellum moderately large, minutely punctate, subangulate ; 

 elytra nearly one-half longer than wide, obtusely ogival at tip, 

 evidently wider than the prothorax, with arcuate sides, the series 

 somewhat uneven, with more widely spaced punctures than in 

 edax and becoming less confused at base ; abdomen finely, very 

 sparsely punctate medially. Length 6.4 mm. ; width 2.S mm. 

 California (Colorado Desert), — G. W. Dunn molestum n. sp. 



Body shorter and stouter than in any of the three preceding species; 

 black, the legs dark rufo-piceous, moderately shining, the entire 

 elytra opaque; head well developed, not very coarsely or closely 

 punctate, the occipital spot ill-defined, the sides feebly converging 

 but strongly arcuate, becoming subparallel for some distance be- 

 fore the eyes; prothorax almost three-fourths wider than long, 

 the sides distinctly arcuate, more converging and straight an- 

 teriorly, the basal angles obtuse, not blunt or prominent, the 

 punctures rather coarse, perforate, moderately separated medi- 

 ally, becoming gradually coarse and dense toward the sides; scu- 

 tellum moderate, tumid, punctate; elytra short, a third longer 

 than wide, rapidly narrowed and very obtusely ogival in apical 

 two-fifths, the sides feebly arcuate, the disk distinctly wider than 

 the prothorax and baiely two and one-half times as long, the 

 punctures only moderately coarse, very strongly muricate and 

 close-set in even series laterally, with the interstitial punctures 

 less conspicuous and more widely spaced, the punctures small, 

 sparse, muricate and largely confused suturally; abdomen pol- 

 ished, finely, moderately sparsely but distinctly punctate medi- 

 ally. Length 6.6 mm. ; width 3.9 mm. California (southern). 



opacipenne n. sp. 



38 — Form rather stout, oblong, subparallel, rather convex, black, the 

 legs somewhat bright rufous; head somewhat coarsely, perfor- 

 ately and rather closely punctate, the sides before the eyes strongly 

 converging, evenly and very moderately arcuate ; prothorax about 

 as wide as the elytra, the sides evenly, rather strongly arcuate, 

 slightly more converging anteriorly than posteriorly, the apex 

 moderately sinuate; punctures strong, somewhat uneven and 

 rather close-set, becoming gradually much coarser and longitudi- 



