64 MEMOIRS ON THE COLEOPTERA 



punctulato-rugulose, becoming rather coarsely, shallowly punctate 

 at the sides basally, clothed very inconspicuously with short erect 

 dark gray hairs; scutellum scabrous, with shining edges, black, with 

 feeble greenish tinge, the pronotum also black with greenish opaque 

 lustre, generally irregularly pale along the sides and base; elytra 

 oblong, parallel, very rapidly obtusely rounded at apex, a fourth or 

 fifth wider than the prothorax and slightly longer than wide, either 

 wholly black with feebly pallescent suture or pallescent laterally, at 

 each side of the scutellum and broadly along the suture posteriorly; 

 sides feebly arcuate; epipleura pale; sculpture as in the preceding but 

 rather less coarse and with the entire surface shining, glabrous; 

 pygidium pallescent, broadly tumid below the middle, having very 

 dense and intricately rugulose sculpture but less fine than in the 

 preceding; hind tibiae (9) only moderately stout. Length (9) 

 9.5-10.8 mm.; width 5.6-6.2 mm. Mexico (Cuernavaca, Morelos), 

 Wickham *densicollis n. sp. 



3 Body somewhat as in the preceding in general outline and convexity 

 but shining throughout; head not half as wide as the prothorax, 

 black, feebly shining, closely but rather discretely punctate, more 

 coarsely basally, the front flattened; clypeus twice as wide as long, 

 the lateral inflation very slight, the sides frequently parallel, the 

 angles broadly rounded and the apex slightly arcuate; surface flat, 

 gradually and very feebly reflexed peripherally, the suture deeply 

 impressed and conspicuous, posteriorly oblique at the sides; eyes not 

 prominent; antennal club small; prothorax two-fifths wider than 

 long, the sides rounded at the middle, thence straight and parallel 

 to the base and strongly converging and straight to subsinuate an- 

 teriorly to the very acute and prominent angles, the basal angles but 

 little more than right, not rounded; base moderately lobed, the bead 

 entire; surface convex, rather coarsely but shallowly, irregularly but 

 generally closely punctate, with intermingled minute punctulation, 

 the median line broadly smooth basally, unimpressed; color black, 

 without metallic lustre, obliquely pallescent postero-externally or 

 throughout at the sides, more broadly basally; scutellum finely, 

 sparsely punctate; elytra a fifth longer than wide, two-fifths wider 

 than the prothorax, parallel and feebly arcuate at the sides, abruptly 

 and broadly rounded at apex, coarsely and deeply sulcate, the sulci 

 moderately and closely punctate; intervals convex, the two discal 

 ridges not more pronounced, the space between the inner and the 

 sutural with a single impressed irregular series of punctures, broad- 

 ening basally, the elevation between the two discal ridges with a 

 loose series of very coarse and irregular punctures; ridges near the 

 sides not very conspicuous; color black, the suture and sometimes the 

 surface basally and from the humeri posteriorly, rufescent; pygidium 

 convex, pallid, blackish apically, finely, rather closely punctulate and 

 with intermingled minute punctulation, the sparse hairs short and 

 stiff; legs only moderately stout. Length (9) 9-3~9-5 mm.; width 

 4.8-5.3 mm. Mexico (Jalapa). Received from the Museum in the 

 City of Mexico *nubicollis n. sp. 



Body much smaller, shining, pale testaceo-flavate throughout, the head 



