178 Coleopterological Notices, III. 



Smaller species, much less stout, the sides of the prothorax sub- 

 parallel behind the tubercles alllOY estitllS 



Elytral vestiture rather less dense, not denuded in definable spots but 

 slightly denser along the alternate intervals, extremely easily re- 

 movable ; punctures of the elytral series uniform in size throughout. 



molitor 



Sutural interval evenly clothed with shorter sparser and darker vestiture, 



forming an even sutural vitta wickhami 



Sutural stria broadly and strongly impressed almost throughout the length 

 but especially so between basal and apical third densilS 



In distribution the genus Dinocleus seems to be confined to the 

 desert regions of Southern and Lower California, thence extending 

 through the southern parts of Arizona and along the western slope 

 of Mexico at least as far as Acapulco. 1 



I>. pilosiis Lee. — Centrodeonus pil.: Proc. Am. Phil. Soc, XV, p. 145. — 

 Robust, oval, black, moderately shining, the nearly flat bottoms of the large 

 punctiform fovese highly polished. Head coarsely, rather densely punctate, 

 nearly denuded of pubescence ; beak broadly bisulcate, nearly twice as long 

 as wide, densely clothed above but abruptly glabrous on the flanks, a little 

 shorter than the prothorax. Prothorax a little wider than long, strongly 

 tuberculate laterally at apical fourth, the sides thence parallel to the base 

 and feebly sinuate immediately behind the tubercle ; apex transverse, three- 

 fourths as wide as the base, the latter broadly triangular ; disk extremely 

 coarsely, deeply, unevenly punctato-foveate, the interspaces densely, finely but 

 strongly punctate, with a very fine imperfect median pubescent line, a broader 

 sinuate line laterally which is bifurcate toward base, the lateral tubercle also 

 more densely pubescent. Scutellum small but distinct. Elytra two-fifths 

 longer than wide, a little more than twice as long as the prothorax, and, in 

 the middle, nearly two-fifths wider than the latter ; sides arcuate, the humeri 

 not distinctly exposed ; apex broadly conjointly rounded ; disk with rows of 

 large deep punctures, the alternate intervals very strongly costiform ; pubes- 

 cence very dense, denuded in a small spot between the third and seventh inter- 

 val at basal third which does not at all interrupt the elevated fifth interval, 

 also in a small discal spot just behind the middle of each elytron. Abdomen 

 densely squamulo-pubescent, densely speckled with small subdenuded points. 

 Legs robust, densely pubescent, the femora annulate with denser, paler vesti- 

 ture at apical third. Length 11.7 mm. ; width 5.3 mm. 



California. Cab. LeConte. 



Described from the unique type which is in an excellent state of 

 preservation. The species may be known at once by the strongly 

 costiform alternate elytral intervals and long erect bristling setae, 

 in addition to the dense vestiture. 



1 The measurements of length, which follow, are exclusive of the beak, 

 i. e., from the anterior margin of the eye to the apex of the elytra. 



