332 MEMOIRS ON THE COLEOPTERA 



toward the segmental apices; middle tarsi much less abbreviated 

 than in adusta, being barely visibly shorter than the tibiae. Length 

 21.3-24.0 mm.; width 10.2-11.3 mm. New Mexico, F. H. Snow. 



Two examples diffracta Csy. 



Body shorter, relatively stouter and more oval, very convex, shining, with 

 sparse yellowish-white vestiture; vertex and clypeus subsimilarly 

 coarsely, strongly, very closely but not confluently punctate, the 

 vertex with many erect brownish hairs and some whitish scales near 

 the eyes, the clypeus with sparse hair-like pale yellow scales, denser 

 on the reflexed apex, which is broadly arcuate in outline, a little 

 more so medially, the angles obtuse, the sides thence slightly con- 

 verging to the base; last palpal joint not quite three times as long as 

 wide, the elongate and slightly flattened asperulate outer area rather 

 well denned; prothorax throughout nearly as in diffracta, except 

 that the coarse punctures are not quite so close-set, sometimes being 

 rather sparse sublaterally, the long scales of the impressed median 

 line and basal sublateral vittae less dense, generally not quite in 

 mutual contact, the short vittae, especially, broader and more diffuse; 

 erect hairs longer, more numerous and more conspicuous; scutellum 

 similar, densely squamose along the middle and with scattered scales 

 laterally toward base; elytra shorter and more broadly oval, a fourth 

 longer than wide and about two-fifths wider than the prothorax, al- 

 almost similarly rugose, more sparsely punctate, the suture with a 

 broad and even vitta of very close-set small scales from apex to base, 

 the three discal lines on each also much broader, similarly ragged and 

 composed of smaller and less elongate squamules, more yellowish 

 in color, the squamules of the intervals still smaller, sparse and very 

 slender; pygidium more densely clothed throughout with broader 

 scales, mixed with short and more erect slender hairs; intermediate 

 tarsi not so long, distinctly shorter than the tibiae. Length 20.0 

 23.3 mm.; width 10.2-11.5 mm. Arizona (Chiricahua Mts.), 



V. W. Owen. Three examples fuscula Fall 



14 Elytral vestiture in the form of scales between three and four times 

 as long as wide; pronotal punctures notably coarse, as in the three 

 preceding species. Body of moderate size, cylindric-oval, black 

 or nearly so, the prothorax rufous; integuments moderately shining, 

 rather closely clothed, the dense scales white, the others yellowish; 

 vertex and clypeus closely and strongly punctured and with close 

 erect pale brown hairs throughout, the vertex with dense scales 

 toward the eyes, the clypeus with sparse scales and many erect 

 hairs, the scales becoming smaller and very dense apically, the apex 

 arcuato-truncate, the angles distinct, sometimes slightly prominent, 

 the sides subparallel; last palpal joint slender, fully three times as 

 long as wide; antennal club longer than in crinita, more than twice 

 as long as the stem; prothorax more than twice as wide as long, the 

 sides angulate and prominent at the middle, thence equally converging 

 and straight to base and apex; surface with the coarse punctures 

 widely separated, each with a long scale or stout hair, they being 

 diversified in form, the median line, an oblique vitta at outer fifth, 

 in about basal half, and the base thence internally, having very dense 



