ioo MEMOIRS ON THE COLEOPTERA 



glabrous, with scattered moderate punctures, those at base bearing 

 a very few short stiff hairs; elytra large, a fourth or fifth wider than 

 the prothorax, more than a fourth longer than wide, circularly 

 rounded in about apical two-fifths, the sides thence converging 

 slightly and nearly straight to the base; surface even in coloration, 

 with the two outer slightly impressed double series of punctures 

 regular, the inner double series indistinct, confused with the coarse 

 diffused punctuation of the disk suturad, there also becoming 

 somewhat rugulose; externally, the punctures become much smaller 

 and sparse; the infrahumeral impression of Cotalpa is obsolete, the 

 fine reflexed lateral edges even; pygidium with small scattered 

 asperate setigerous punctures, almost evenly distributed throughout, 

 and some feeble loose rugulosity, the color somewhat more obscure 

 broadly at the middle; abdomen with strong asperulate punctuation, 

 wanting toward the bases of the segments; legs moderate, roughly 

 sculptured, the hind tarsi slender, scarcely more than two-thirds as 

 long as the tibiae. Length (9 ) 29.0 mm.; width 15.5 mm. Arizona 



(Huachuca Mts.) rufobrunnea n. sp. 



IForm slightly stouter, oblong-ovate, rather convex, somewhat inflated 

 behind, rufo-castaneous, rather shining, the lustre of the head and 

 pronotum slightly cuprascent; elytra narrowly infuscate at the 

 margins; under surface densely pubescent; clypeus trapezoidal, with 

 strongly oblique and anteriorly feebly arcuate sides, the angles 

 rounded, the apex not reflexed, the margins very feebly thickened, 

 the surface, as also that of the head, strongly and closely punctate, 

 with finer punctures intermingled; prothorax at base almost twice 

 :as wide as long, the sides angularly prominent at the middle, the 

 obtuse hind angles not rounded; base scarcely lobed, the basal bead 

 not interrupted; surface throughout coarsely, almost confluently 

 punctate, with very fine punctures intermingled, having a feeble 

 canaliculation along the middle and, near this anteriorly, a feeble 

 impression; scutellum wider than long, thickly arcuato-punctate, 

 the margins black; elytra with a mixture of coarse and fine punctures, 

 the double series distinct; pygidium with a fine impression along the 

 middle, sparsely punctate and almost glabrous medially, densely 

 and rugosely punctured and hairy laterally. Length 28-31 mm.; 

 width 16-17 mm - Arizona. Three female examples in the Berlin 

 Museum. [Byrsopolis arizonce Ohaus] arizonae Ohaus 



Arizona, which until reading the original description I had 

 held to be the same as rufobrunnea, differs from the latter in many 

 features. In rufobrunnea, the punctures of the head and clypeus, 

 for example, are very densely crowded and without intermingled 

 finer punctures, the punctures of the pronotum moderate and widely 

 separated, except apically and near the sides, and its surface is 

 without trace of metallic glint; there are also differences in the 

 sculpture of the elytra and pronotum, the punctures of the former 

 being subuniform and not mingled with finer punctures, and the 



