388 CASEY 



rounding to the base of the prothorax, at the middle fully two- 

 fifths wider than the prothorax, the punctures rather small and 

 sparse but strong, becoming not much larger but close-set laterally, 

 confused but with traces of slightly larger punctures in series, the 

 sutural broadly impressed line distinct apically, the sutural angles 

 acute but not mucronate ; abdomen polished, rather finely but not 

 verv sparsely punctured medially. Length 9.0 mm. ; width 4.0 

 mm. Utah (Marysvale), — H. F. Wickham uintanum n. sp. 



8 — Form elongate-oval, convex, shining, black, without metallic 

 lustre except a feeble steel-blue tint on the pronotum, subglabrous ; 

 head moderately coarsely, perforately and closely punctate, the 

 tenth antennal joint obtriangular, about a third wider than long ; 

 prothorax rather elongate, scarcely more than a fifth wider than 

 long, the apex fully three-fourths as wide as the base, the sides 

 very evenly and moderately arcuate throughout, the basal angles 

 right, not at all prominent, the apical acute and anteriorly promi- 

 nent, the surface strongly but rather sparsely punctured, becom- 

 ing gradually somewhat coarsely, densely so laterally, with a nar- 

 row and subentire impunctate line, not impressed near the base ; 

 scutellum transverse, very obtusely ogival, convexly declivous 

 anteriorly ; elytra gradually but rather obtusely ogival in apical 

 two-fifths, the sides becoming subsinuate behind the humeri, which 

 are broadly rounded to the thoracic angles, at the middle fully 

 two-fifths wider than the prothorax, the punctures not very coarse 

 but strong, not larger but dense laterally, confused though \vith 

 the feeblest traces of larger pimctures aggregated into partial 

 lines suturally, the sutural angles simple, acute; abdomen 

 strongly and closeh' punctin-ed medially and slighth' shining, the 

 basal segment more sparsely punctured. Length ii.o mm.; 

 width 4.^ mm. Arizona fusiforme Csy. 



Form still more narrowly fusoid, naviculate, convex, polished, some- 

 what piceous-black, with very feeble bronzy lustre, the pubes- 

 cence extremely short and very inconspicuous ; head strongly but 

 not very coarsely punctured, loosely so medially but densely and 

 rugosely laterally, finely but strongly and closely apically, the epi- 

 stoma angulate, with the angle slightly prominent ; prothorax nearly 

 as \\\ fusiforme but with the broadly arcuate sides usually becoming 

 slightly sinuate before the basal angles, which are somewhat acute 

 and prominent, the apical acute and anteriorly prominent, the 

 surface finely, rather sparsely punctured, becoming strongly but 

 not very coarsely and closely though not densely so laterally, the 

 punctures at the extreme edge decidedly smaller than at about 

 lateral fourth or fifth ; scutellum transversely ogival, declivous 

 only at base; elytra gradually very acute in apical two-fifths, 

 with only very feebly and rather finely impressed lines suturally, 

 the sides arcuate, the humeri gradually rounding to the thoracic 

 angles, at the middle about a third wider than the prothorax, the 

 punctures decidedly coarse and very strong, rather well separated, 



