500 Coleopterological Notices, IV. 



more strongly so anteriorly, with a rather wide hut ill-defined suhentire 

 median line, the punctures moderate, deep, somewhat sparsely and unevenly 

 distributed, less than one-half as wide as the scutellum and separated by 

 between once and twice their own diameters. Scutellum moderate, tumid, 

 nearly as long as wide. Elytra two-fifths longer than wide, fully twice as long 

 as the prothorax, and, at the rather prominent humeri, distinctly wider than 

 the latter ; sides behind the humeri quite distinctly convergent, the apex 

 rather gradually and semi-circularly rounded ; disk with somewhat coarse, 

 very deep, finely, remotely punctured grooves, the intervals flat, generally 

 one-half wider than the grooves, each with a single series of somewhat deep, 

 moderately large punctures, the second and third intervals much wider than 

 the others, the former with the punctures slightly uneven, the latter rather 

 broadly confused ; punctures generally close-set ; setae very minute and in- 

 conspicuous. Abdomen rather coarsely, deeply, moderately closely punctured. 

 Legs strongly but sparsely punctured. Length 3.6 mm. ; width 1.7 mm. 



Missouri ; Texas. 



Described from the female. This species does not seem to be 

 very closely allied to any other in general facies, but it is difficult 

 to make this clear from description only. It is distinguishable by 

 its sparsely, moderately coarsely punctate and somewhat depressed 

 pronotum from several of those to which it is more closely related. 

 From confinis, it differs in its more elongate form and black color, 

 never being in the least aeneous. 



36 Baris aperta n. sp. — Oblong-subcylindrical, dark rufo-piceous, the 

 pronotum blackish ; integuments highly polished. Head very minutely 

 sparsely and obsoletely punctate, the beak rather sparsely but strongly so, 

 especially at the sides, somewhat slender, strongly arcuate, three-fourths as 

 long as the prothorax ; antennas rather long, moderately robust, normal in 

 structure. Prothorax rather more than one-third wider than long, the sides 

 very evenly and rather strongly arcuate from base to apex; base two and 

 two-thirds times as wide as the head, transverse, straight, the median lobe 

 small but distinct ; disk convex, without distinct median line, the punctures 

 slightly coarse, deep and dense, about two-thirds as wide as the scutellum 

 and separated by scarcely one-half their own diameters. Scutellum small, 

 slightly tumid. Elytra nearly one-half longer than wide, twice as long as the 

 prothorax and not distinctly wider than the latter, rather gradually and semi- 

 circularly rounded at apex, the humeri feebly tumid ; disk with abrupt, very 

 deep, moderately coarse grooves which are very obsoletely punctate at the 

 bottom ; intervals flat, about twice as wide as the grooves, each with a single 

 line of very fine but distinct, widely-spaced punctures ; setae minute and 

 inconspicuous. Abdomen finely, rather feebly and very sparsely punctured 

 throughout, but, as usual, densely so on the fifth segment and pygidium. Legs 

 sparsely, feebly punctate ; tibiae not sinuate externally, the tarsal claws 

 moderate. Length 3.0 mm. : width 1.3 mm. 



