72 MEMOIRS ON THE COLEOPTERA 



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rounded and moderately well denned; legs pale, the femora often 

 piceous, except at apex; head notably small, three-fifths as wide as 

 the prothorax and much narrower than the thoracic apex, the eyes 

 not very prominent; antennae long, slender, piceous, paler basally, 

 the medial joints between three and four times as long as wide; pro- 

 thorax large and convex, two-fifths wider than long, the anteriorly 

 strongly rounded sides oblique behind, becoming gradually sinuate 

 and parallel very near the angles, which are right; anterior impres- 

 sion deep, near the apex, the posterior depression strong and punc- 

 tate; stria deep, not quite entire; foveae large, strongly impressed, 

 the middle of each very deep; carina rather strong; margins strongly 

 and subequally reflexed; elytra three-fifths longer than wide, only 

 two-fifths wider than the prothorax, the sides feebly arcuate, not 

 very abruptly rounded at the humeri, gradually strongly rounded 

 in apical two-fifths; striae moderate, more or less impressed, obsolete 

 only very near the apex or subentire, the seventh subobsolete; punc- 

 tures moderate, not very close-set; foveae rather small, near basal 

 and apical third. Length (9) 6.2-6.3 mrn.; width 2.3 mm. New 

 Mexico bimaculatum Kirby 



Form nearly as in bimaculatum, but with relatively larger head and 

 smaller prothorax, shining, piceous-brown throughout, the anterior 

 parts nearly black, with feeble greenish lustre; head fully three- 

 fourths as wide as the prothorax and as wide as the thoracic apex, 

 the eyes notably prominent; antennae long and slender, fuscous, very 

 gradually testaceous basally, the medial joints rather more than 

 three times as long as wide; prothorax two-fifths wider than long, 

 widest barely at all before the middle, the sides subevenly rounded, 

 rather gradually sinuate posteriorly, becoming parallel near the 

 right angles; surface punctate and depressed at base, the anterior 

 impression fine, deep and close to the apex, which is almost trun- 

 cate, with obtuse and blunt angles; stria strong, subentire; foveae 

 and carina nearly as in bimaculatum; elytra similar in general out- 

 line but broader, one-half wider than the prothorax, the striae finer 

 and less impressed, obsolescent on the declivity, the punctures some- 

 what smaller, moderately separated; foveae before basal and near 

 apical third; posterior pale spot similar. Length (c? 9 ) 5.7-6.8 

 mm.; width 2.15-2.4 mm. Nevada (Reno). Ten specimens. 



renoanum n. sp. 



51 Prothorax notably large and very convex, greatly constricted at 

 base; eastern regions. Body rather stout, very convex, polished, 

 black, with greenish lustre, the arms of the posterior fascia very 

 much more oblique than in any other; abdomen rufous; legs brighter 

 rufous; head very moderate, not two-thirds as wide as the prothorax 

 but as wide as its apex, much narrower than an elytron, the eyes 

 only moderately prominent; antennae nearly as in the preceding, 

 more rapidly testaceous basally; prothorax two-fifths wider than 

 long, very strongly inflated and rounded at the sides, becoming 

 parallel rather abruptly in basal sixth or seventh; base depressed 

 and punctate, the stria fine; foveae very deep, linear, the carina 

 shorter, distinct; elytra nearly three-fifths longer than wide, two- 



