CETONIIISLE 283 



interlacing lines; under surface polished, black, the meta-parapleura 

 with more or less pale indument; anterior tibial teeth rather strong 

 and acute. Length (9) 17.5 mm.; width 10.0 mm. Mexico 

 (locality unknown) *cinerea G. & P. 



Body smaller, narrower, the hind body more elongate, rather more de- 

 pressed and more cuneate, with the dense opaque indument even 

 and of a dark reddish-ochreous color 8 



8 Head just visibly convex along the middle, covered densely and 

 evenly with opaque indument and with fine separated punctures, 

 except along the middle, the sides and apex of the clypeus exposed, 

 black and with the punctures close, the apex thick, sinuate medially, 

 the angles broadly rounded as usual; hairs borne by the discal punc- 

 tures very minute, glistening; prothorax as usual, the lateral bead 

 rather fine, elevated, indumentate posteriorly, the apical margin 

 with a small bare though scarcely elevated callosity at the middle; 

 punctures wanting, except a few fine and sparse near the sides; 

 elytra fully two-fifths longer than wide, the apical angles broadly 

 rounded, nearly flat above, the suture barely elevated posteriorly, 

 surface with very fine simple punctures but only in about posterior 

 and inner half, forming series along the elevated lines, with a few 

 intermediate; pygidium as in the preceding but with the transverse 

 interlacing incised lines coarser, deeper and not so close-set, also 

 with the short hairs coarser and more distinct. Male with the upper 

 tooth of the anterior tibiae obsolete, the pygidium without indument; 

 female with the three teeth of the anterior tibiae sharp, gradually 

 diminishing upwardly, the pygidium with the scattered hairs very 

 much coarser than in either the male or the preceding species; 

 under surface as in the latter. Length (cf 9 ) 15.5-16.0 mm.; 

 width 8.8-9.0 mm. Mexico (Guerrero), Baron . *simulans n. sp. 



Head rather distinctly but obtusely elevated along the middle, very 

 coarsely and densely punctured, the punctures bearing longer 

 glistening hairs than in the preceding, the ochraceous indument only 

 present at base and along the sides, to slightly beyond the eyes, and 

 in a small median subapical area, the sides and apex of the clypeus 

 with the close punctures very much finer than those of the disk; 

 apex thick, the median sinus rather deep; prothorax formed as usual, 

 the lateral beading rather fine; surface with excessively minute 

 remote punctulation, except laterally and especially antero-laterad, 

 where the punctures become less sparse, notably large and crescentic; 

 apex with a transverse and feebly tumid black callus at the middle; 

 elytra shorter than in the preceding, not much more than a third 

 longer than wide, otherwise nearly similar, though less flattened on 

 the disk and with the apical angles still more broadly rounded; 

 surface completely devoid of any kind of punctuation, except a few 

 extremely minute punctules on the subapical umbo; sutural angles 

 similarly lobiform; pygidium black, feebly convex, devoid of indu- 

 ment, shining, with transverse interlacing and well separated lines, 

 which are much finer, more superficial and scratch-like than in any 

 other species, the sparse hairs rather pallid and coarse; anterior tibiae 



