66 MEMOIRS ON THE COLEOPTERA 



apex; striae fine, barely at all impressed, obsolescent posteriorly, 

 even more so than in viaticum, the punctures fine and, except sutu- 

 rally, rather widely spaced, the seventh series barely traceable. 

 Length (cf 9) 3.9-4.0 mm.; width 1.5-1.55 mm. New York (Lake 



Champlain). Five examples nitens Lee. (catalogue name) 



A Similar to nitens but larger and rather stouter, the head somewhat 

 larger; prothorax slightly shorter, one-half wider than long, other- 

 wise nearly similar; palpi black as usual in this subsection; elytra 

 similar but not quite so elongate and scarcely over two-fifths 

 wider than the prothorax, similarly striate and punctate, except 

 that the punctures are less widely separated. Length (cf 9 ) 4.3 

 -4.35 mm.; width 1.65 mm. Colorado (Eldora and also from the 

 Levette cabinet) seductum n. subsp. 



37 Elytra uniform in color, generally black, sometimes feebly and 

 indefinitely paler apically as in texanum and cogitans, but never 

 definitely maculate 38 



Elytra uniform or very nearly, but always having a posterior bioblique 

 pale fascia, which is often reduced to an external spot on each. . .47 



Elytra of the ustulatnm type in ornamentation, castaneous, nubilously 

 paler externally toward the humeri and also with the bioblique 

 posterior fascia of the preceding subsection 56 



38 Basal thoracic angles very acute, everted and prominent. Body 

 slender, convex, shining, black, or with just visible piceous tinge, 

 the under surface piceous, the legs bright rufous; head longer than 

 wide, the eyes not very prominent, three-fourths as wide as the 

 prothorax and not quite as wide as an elytron; antennae rufo-piceous, 

 clearer basally, rather long, the medial joints more than three times 

 as long as wide, feebly obconic; prothorax barely a fourth wider than 

 long, the sides evenly and strongly rounded, converging posteriorly, 

 becoming suddenly sinuate only at the angles, widest at two-fifths 

 from apex; base subequal to the apex; surface very convex, smooth, 

 the impressions subobsolete, the stria fine and long but not quite 

 entire; foveae very deeply impressed, elongate, linear, near outer 

 fifth, the carina distinct; elytra oval, with distinctly arcuate sides, 

 very gradually strongly rounded behind, three-fifths longer than 

 wide, barely two-fifths wider than the prothorax; striae feebly im- 

 pressed, not fine, the discal obsolescent at three-fifths; punctures 

 strong, well separated except suturad; seventh stria obsolete, the 

 minute punctules scarcely traceable; foveae near basal and apical 

 third. Length (cf) 5.3 mm.; width 1.85 mm. Mexico (Colonia 

 Garcia, Sierra Madre Mts., Chihuahua), Townsend. 



*citulum n. sp. 



Basal angles right, the sides near them straight and parallel 39 



39 Head narrow, not so wide as the thoracic apex, the eyes but feebly 

 convex. Upper surface somewhat depressed, black, polished, with 

 feeble greenish lustre, the elytra very faintly picescent; under sur- 

 face piceous, the legs bright rufous; head two-thirds as wide as the 

 prothorax, very much narrower than an elytron; antennae long, 

 brownish-testaceous, 'the medial joints three times as long as wide; 

 prothorax scarcely two-fifths wider than long, the sides evenly and 



