404 CASEY 



the apex three -fourths as wide as the base, with very feeble and 

 broadly sinuato-truncate lobe, the angles acute, produced and 

 everted, the basal angles right, not at all everted or prominent, 

 the sides evenly and feebly arcuate to the sinus behind the apical 

 angles ; sui'face rather coarsely, very deeply and closely punctate 

 medially, very densely so but not more coarsely laterally, more 

 finely at about lateral fourth and at the sides, not distinctly bi-im- 

 pressed at base ; elytra barely one-half longer than wide, three 

 times as long as the prothorax and a fourth wider, rapidly obtusely 

 ogival posteriori}^, the sides broadly, evenly arcuate to the humeri, 

 which are not exposed at base, the callus very feeble, the punc- 

 tures only moderately small, deep and rather close-set suturally, 

 larger but shallow, dense and subscrabrous laterally, with very 

 obsoletely impressed lines including some coarser punctures sutur- 

 ally; female unknown. Length 10.6 mm.; width 4.9 mm. 

 Arizona conf ertus n . sp. 



Form similar but more depressed, more shining, the elytra with greenish- 

 bronze lustre, the pubescence very short and inconspicuous ; head 

 nearly as wide as long, rather coarsely, closely punctate, the epi- 

 stomal lobe large, much produced, very obtusely ogival ; pro- 

 thorax ((j^) rather less than one-half wider than long, the apex a 

 little more than three-fourths as wide as the base, with the lobe 

 very feeble, truncate, the angles rather thick, somewhat blunt at 

 tip, much produced and strongly everted, the basal angles slightly 

 acute but not everted, the sides straight, becoming very feebly 

 arcuate before the middle to the post-angular sinus, the surface 

 very distinctly impressed near each side at base, rather coarsely, 

 closely punctate, finely and very densely so at lateral fourth and 

 near the edge, coarsely and less densely intermediately, without 

 impunctate median line; elytra fully one-half longer than wide, a 

 little more than three times as long as the prothorax and almost a 

 third wider, very rapidly and obtusely ogival at tip, the sides 

 broadly arcuate, more rapidly rounded at base to the thoracic 

 angles, the callus moderately prominent ; surface wholly devoid 

 of trace of impressed lines, unusually coarsely, deeply and closely 

 punctate, scarcely more coarsely but more shallowly and moder- 

 ately closely so laterally; female unknown. Length 9.5 mm.; 

 width 4.3 mm. Arizona eversus n. sp. 



Form more narrowly elongate-oval, more convex than in eversus and 

 less shining, the pubescence very short, inconspicuous ; head as 

 wide as long, only moderately coarsely and not very closely punc- 

 tate, the epistomal lobe broad and angulato-ogival, the sides less 

 arcuate than in the preceding species; prothorax ((^) a little 

 more than one-half wider than long, the apex as in eversus^ with 

 the lobe feeble and sinuato-truncate, the angles very different, 

 short, not produced, very feebly everted and scarcely prominent 

 though acute and not blunt, the basal angles and sides as in 

 eversus ; surface finely, rather sparsely punctate medially, a little 



