504 CASEY 



Body pale brownish-testaceous in color, the disk of the pronotum and 

 a broad subsutural longitudinal streak on each elytron nubilously 

 piceous-black 8 



Body bicolored, the anterior parts obscure but pale testaceous, the hind 

 body piceous-black, the abdomen testaceous toward the sides and 

 apex 9 



3 — Anterior angles of the prothorax blunt 4 



Anterior angles right and not at all blunt, sharply defined 7 



4 — Apical angles of the prothorax much deflexed and rounded. 



Body rather stout and the largest of the genus, convex, polished, 

 glabrous, black, the anterior parts scarcely visibly picescent, the 

 legs and antennae piceous ; head trapezoidal, the oblique sides 

 straight, slightly prominent and arcuate just above the antennse, 

 the upper section of the eyes rather short, oblong and rather less 

 coarsely faceted than usual, the surface not very coarsely but 

 asperately, somewhat closely punctured ; prothorax fully four- 

 fifths wider than long, parallel, the sides evenly and strongly 

 arcuate, the basal angles evident but very obtuse; surface convex, 

 unusually declivous at the sides, finely, rather sparsely punctured, 

 becoming gradually less finely and asperately so laterally but still 

 not very closely ; elytra barely one-half longer than wide, gradu- 

 ally ogival behind, the sides parallel, evenly and moderately 

 arcuate to the obtusely but distinctly angulate humeri, which are 

 moderately exposed at base, the disk slightly wider than the pro- 

 thorax and between two and three times as long, not very closely, 

 finely punctured in close-set series, rather regular laterally but 

 uneven toward the suture, the carinae attending the punctures 

 laterally extremely small and scarcely noticeable ; abdomen finely, 

 very sparsely punctate, more coarsely, closely and rugosely so 

 near the sides. Length 4.5 mm.; width 1.7 mm. Arizona 

 (Holbrook), — H. F. Wickham valens n. sp. 



Apical angles of the prothorax not unusually deflexed or rounded, 

 distinct and merely blunt at the immediate angle 5 



5 — Elytral punctures laterally not attended by a distinct longitudinal 



carinule ; bod}^ unusually short. Form stout, strongly convex, 

 polished, colored as in valens,, glabrous ; head trapezoidal but 

 without the arcuate prominence at the sides above the antennae, 

 the eyes moderate, coarsely faceted, the surface not very coarsely 

 or closely but very asperately jounctate ; antennae a little shorter 

 and stouter than usual ; prothorax not quite four-fifths wider than 

 long, three-fourths wider than the head, the base slightly nar- 

 rower than the apex, the sides moderately and almost evenly 

 arcuate, becoming feebly sinuate at the obtuse but distinct basal 

 angles, which are thereby rendered somewhat prominent, the 

 apical angles bluntly rounded ; surface minutely and very remotely 

 punctured medially, then somewhat coarsely and less sparsely, 

 then rather abruptly coarsely, closely and subrugosely near the 

 sides ; elytra very short, scarcely a third longer than wide, barely 



