178 NORTH AMEniCAN 



conflupiitly so, the latter two-thirds wider tlian long, sides rather strongly- 

 convergent anteriorly and strongly arcuate, apical margin strongly sinuate, 

 edges reHexed, scarcely more strongly so anteriorly than along the sides ; 

 eyes small, not prominent ; last joint of the maxillary palpi equal in length 

 to the first three together ; third joint of the antennae scarcely more than 

 two-thirds as long as the fourth, fifth twice as long as the sixth, conical, 

 irregularly hopper-shaped. Prothorax twice as wide as long ; sides slightly 

 convergent from base to apex and moderately arcuate, straight toward the 

 basal angles which are narrowly rounded ; apex slightly more than two- 

 thirds as long as the base, broadly and not strongly emargiuate, bottom of 

 the emargination broadly arcuate ; base brO'idly arcuate, very feebly sinuate 

 at each side of the middle ; disk moderately convex, polished, finely and 

 somewhat irregularly punctate, narrowly impunctate along the middle toward 

 the base, punctures smaller and more distant in the middle. Scutellum as 

 wide as long, triangular, acutely rounded at tip, punctate except broadly 

 along the middle. Elytra at base as wide as the pronotum, widest at two- 

 thirds the length from the base ; sides very feebly arcuate ; together abruptly 

 and very obtusely rounded behind ; disk convex, very slightly more tlian 

 one-half longer than wide, about three times as long as the pronotum ; 

 longitudinal costae very feeble, broadly convex, impunctate, polished, in- 

 tervals much narrower, finely and very irregularly punctate; punctures 

 round, rather feebly impressed. Under surface somewhat finely, sparsely, 

 and irregularly punctate throughout ; legs slender ; first joint of the poste- 

 rior tarsi very slightly longer than the second ; claws long and slender, 

 deeply and very narrowly cleft at tip, teeth of about equal length, the outer 

 very fine and acute, straight near the tip, the inner robust, obliquely 

 acuminate at tip. Length 7.0 mm. 



Arizona (Morrison), 2. 



The usual rows of setae along the latcM-al e<l2:es of the pronotum 

 and elytra are present. The relative length of the third aiitennal 

 joint may suffice to create a division in the genus. 



I>IPLOTAXIS Kirby. 



D, leTicllla n. sp. — F<irm moderately robust. Color throughout dark 

 reddish-brown, tarsi very slightly paler ; dorsal surface glabrous, moderately 

 shining, under surface having a few widely scattered erect robust setae which 

 are very short. Head four-fifths wider than long; occiput broadly convex, 

 coarsely and confusedly punctate, punctures somewhat transversely coal es- 

 cent, scabrous and not very deep ; clypeal suture transverse in the middle, 

 bent posteriorly at the sides to the eyes, rather well marked ; clypeus very 

 densely and coarsely punctate throughout, transversely truncate and very 

 feebly sinuous anteriorly, bent rather abruptly posteriorly at the sides to 

 the eyes just before which the margin is slightly sinuous, margin somewhat 

 strongly retloxed throughout from eye to eye ; labrum six times as wide as 

 its median length, broadly and somewhat strongly sinuous anteriorly ; disk 

 having a strongly elevated transverse ridge ; last joint of the maxillary palpi 

 slender, fusiform, as long as the two preceding together ; antennae pale 



