344 CASEY 



4 — Form broadly oval, black, the legs piceo-rufous ; head coarsely, 



rather closely punctate, the feeblv tumid epistoma finely and very 

 densely as usual, the sides moderately converging, evenly and 

 moderately arcuate, the apex sinuato-truncate, the eyes moderate 

 and not at all prominent ; prothorax three-fourths wider than 

 long, the sinuate apex nearly three-fourths as wide as the base, 

 with the angles not prominent, widest near basal third, the punc- 

 tures small but deep, rather well separated, becoming but little 

 larger though close and somewhat longitudinallv confluent later- 

 ally ; elytra short, two-fifths longer than wide, between two and 

 three times as long as the prothorax and scarcely wider, gradually 

 obtusely ogival at tip, the sides parallel, broadly arcuate, having 

 unimpressed series of rather small, moderately close punctures, 

 somewhat coarse laterallv and basally, the intervals finely, con- 

 fusedly punctured throughout ; abdomen feebly rugulose, with 

 small but strong, somewhat close-set punctures mediallv, be- 

 coming coarse and conspicuous laterally. Length 6.o-6.7,mm.; 

 width 2.S-3.0 mm. Arizona (Peach Springs), — H. F. Wickham. 



lustrans n. sp. 



Form narrowly oval, strongly convex, rufo-piceous, the anterior parts 

 and under surface dark, the legs pale, rufous ; head rather finely 

 but closely, subevenly punctured throughout, the epistoma not 

 much more closely ; eyes much larger than in histrans but not 

 very prominent, the sides strongly converging, evenly and very 

 moderately arcuate, the apex feebly sinuate ; prothorax two-thirds 

 wider than long, widest at base, the sides feebly and evenly arcuate, 

 the sinuate apex nearly three-fourths as wide as the base, with the 

 angles not prominent but scarcely blunt, the basal angles distinctly 

 and very exceptionallv rounded ; disk with a fine marginal bead 

 throughout, only interrupted toward the middle of the apex, the 

 punctures moderately small, deep and slightly separated, with a 

 narrow, even and subentire impunctate median line, becoming but 

 little coarser but dense, subrugose and longitudinally confluent 

 laterally ; scutcllum scarcely less than a fifth as wide as the base of 

 an elytron ; elvtra nearly similar in form but almost one-half 

 longer than wide, having feebly impressed series of rather coarse, 

 deep, close-set punctures, the intervals extremely finelv, sparsely 

 and confusedly punctulate, though tending to irregular single 

 series on some of the intervals ; abdomen finely, rather strongly, 

 somewhat sparsely punctulate medially. Length 5.3 mm. ; width 

 2.45 mm. Texas (Laredo) nitescens n. sp. 



5 — Color piceous or paler 6 



Color deep black when mature, the legs piceous to blackish 7 



6 — Form rather narrowly oval, strongly convex, very dark piceous, 



the under surface dark, the legs pale, rufous ; head not coarsely but 

 deeply, verv closely and subevenly punctate, 'the eyes motlerate, 

 the sides converging and arcuate, the apex sinuato-truncate ; pro- 

 thorax two-thirds wider than long, very slightly wider at basal 



