478 CASEY 



and with small tubeixles throughout. Male having the shining 

 . femoral swelling of the two posterior pairs rather coarsely, closely 

 punctulate and feebly pubescent, that of the anterior pair very 

 small and rugose, inconspicuous. Length i6,o mm. ; width 6.25 

 mm. Mexico (Guerrero), — Baron *brevicollis n. sp. 



Body nearly similar but rather narrower and less convex, the decum- 

 bent squamiform fulvous hairs very sparse but condensed on the 

 elytral tuberosities, the general aspect of the surface subglabrous 

 and deep black ; head punctate anteriorly and more coarsel}- and 

 closely so laterally, very feebly and sparsely tuberculose basally ; 

 prothorax nearly as long as wide, parallel, the sides broadly 

 rounded, more arcviate and converging anteriorly, broadly sinuate 

 before the basal angles, which are right and slightly blunt but 

 somewhat prominent ; surface studded plentifull}^ with large shin- 

 ing tubercles over all the elevations and near the sides, the sinuous 

 ridges moderate ; elytra but slightly wider than the prothorax and 

 not quite twice as long, the humeri but feebly tumid and oblique, 

 the basal angles falling exactly in longitudinal line with the thoracic 

 angles, the base broadly sinuate ; surface very coarsely and irregu- 

 larly pitted, the ridges corresponding in position with those of 

 brevicollis but much stronger, the shining tubercles scattered 

 throughout, variable in size ; under surface nearly as in brevi- 

 collis. Male with the elongate-elliptical shining femoral spots of 

 the two posterior pairs rather finely, not densely punctulate and 

 spai'sely pubescent, that of the anterior pair ver}- much smaller 

 but elongate-elliptic, punctate and distinct. Length 15.3 mm.; 

 width 5.75-6.1 mm. Mexico (Guerrero), — Baron. 



* subglabra n. sp. 



Body nearly as in brevicollis but with a much less abbreviated pro- 

 thorax, which is in general similar in form but with the basal 

 angles strongly, abruptly everted, acute and very prominent, and 

 the shining black tubercles smaller and sparser, though similarly 

 distributed, the sinuous ridges stronger and more abruptly flexed 

 outward before the middle ; elytra similar in form but with the 

 rows of foveae more regular, the pits deeper and more clearly 

 visible, slightly elongate, the three basal ridges in echelon ; sub- 

 apical tuberosities and polished black tubercles nearly similar, the 

 latter, on the whole, smaller though similarly unequal in size and 

 decidedly less numerous, the humeri more prominently elevated ; 

 abdomen with much smaller and sparser tubercles. Length 17.5 

 mm.; width 6.75 mm. Mexico (Guerrero), — IL H. Smith. 



* prominens n. sp. 



Body smaller and much more depressed, deep black, feebly shining, 

 very sparsely clothed with small narrow brown scales ; head 

 coarsely, rather closely and simply punctate, more finely pos- 

 teriorly, the sides reflexed as usual ; prothorax ncarlv as long as 

 wide, widest slightly before the middle, the sides evenlv rounding 

 and broadly converging anteriorly, the apex two-thirds as wide as 



