ii2 MEMOIRS ON THE COLEOPTERA 



but strongly reflexed; base arcuate; impressions vague and subob- 

 solete, the stria somewhat deeply impressed, not entire; foveae very 

 large, shallow and densely rugose, without a deeper sublineate cen- 

 tral part, the carina distinct, nearly a fifth the total length; elytra 

 more than one-half longer than wide, rather abruptly, obtusely 

 rounded at apex, parallel, with nearly straight sides, somewhat rapidly 

 rounding basally, not a third wider than the prothorax; striae only 

 moderately fine, very feebly impressed; punctures moderate, sub- 

 even and extending almost to the apex; foveae behind basal and near 

 apical fourth, the third interval not noticeably wider than the 

 others. Length (cf) 4.7-4.8 mm.; width 1.8 mm. Utah (Provo 

 Wickham; also from an unrecorded locality) mormon Hayw. 



Body smaller and notably more slender, polished, black, with rather 

 brilliant subaeneous lustre; legs dark rufous; head well developed, 

 with moderate, prominent eyes and short deep sulci, the posterior 

 oblique part of which is obsolete; antennae rather short, piceous, 

 gradually rufous basally, the medial joints twice as long as wide; 

 prothorax nearly one-half wider than long, widest but little before 

 the middle, scarcely as wide at base as at apex, the sides strongly, 

 subevenly rounded to the extremely minute and feeble sinus at the 

 subprominent and sharp angles, the apical obtuse but only slightly 

 blunt; impressions subobsolete, the stria distinct, nearly entire; 

 foveae but feebly rugulose, shallow, with the usual short deep sub- 

 linear median part, the carina distinct, a sixth the total length; 

 elytra one-half longer than wide, two-fifths wider than the prothorax, 

 parallel and but just visibly arcuate at the sides, the latter rather 

 rapidly rounding basally, the apex rapidly ogival; striae entire, rather 

 strong but not impressed, rapidly very fine posteriorly, the punctures 

 somewhat strong, gradually obsolescent posteriorly; third interval 

 distinctly wider than the others; foveae before basal and behind apical 

 third. Length (9) 4.2-4.65 mm.; width 1.45-1.7111111. Arizona 

 (Tucson). Three examples taken by the writer callens n. sp. 



Body still smaller and more slender, not quite so convex, polished, black, 

 the elytra with a feeble piceous tinge; epipleura and legs piceo-rufous; 

 head much smaller than in any of the preceding, two-thirds as wide 

 as the prothorax and narrower than an elytron, the sulci deeply im- 

 pressed, without posterior oblique part; eyes less prominent; antennae 

 longer and more slender, almost as long as the elytra, piceous, clearer 

 basally, the medial joints between two and three times as long as wide ; 

 prothorax less than a third widg r than long, widest but little before the 

 middle, where the sides become strongly and more subprominently 

 rounded, arcuate throughout to the minute basal sinus, the angles 

 slightly obtuse but sharp; base and apex equal, about three-fourths 

 the maximum width; surface with some feeble wavy rugulation bas- 

 ally, the anterior impression obsolete, the posterior not strong but 

 evident; foveae large, shallow and slightly rugose, with a very short 

 deep part at base; carina very short and fine; elytra more than one- 

 half longer than wide, fully two-fifths wider than the prothorax, 

 parallel, circularly rounded behind; striae rather deep and subequal 

 throughout, not impressed, the punctures distinct almost to the 



