Goleopterological Notices, VI. 76 Y 



the polished surface minutely, not densely punctate and not entirely con- 

 cealed by the vestiture; Itasal tomentose line wide laterally but subobsolete in 

 the middle; horn very broad and strongly developed, one-half as wide as the 

 pronotal disk in the female, slightly narrower in the male, not constricted at 

 base, rounded, finely dentellate, densely asperate, the crest moderately ele- 

 vated and defined by a somewhat broken elevated margin laterally, not de- 

 fined at the apex. Elytra about twice as long as wide in the male, rather 

 shorter in the female, slightly wider at apical third and nearly twice as wide 

 as the prothorax, rounded at aj)ex in both sexes; humeral impression very 

 feeble, the scntellar obsolete; disk finely and closely punctate but not very 

 dull, the pubescence dense, even, whitish and somewhat coarse; erect setaj 

 abundant, moderate in length. Length :2.7 mm. ; width 0.8 mm. 



Texas (Galveston). 



This species is also allied to monodon, differing in its smaller 

 size, narrower form, larger thoracic process, whiter pubescence, 

 larger eyes and still more minute and much denser elytral punc- 

 tures; the sides of the prothorax are more oblique anteriorly, the 

 horn being much more gradually formed than in monodon. It is 

 represented b^^ three specimens, in which the sexual characters 

 are very feeble. 



jV. deserfllS. — Rather stout, slightly shining, iwle yellowish-testaceous 

 throughout, the elytra with a small spot at each side of the suture near the 

 base, and a transverse zig-zag fascia behind the middle, strongly produced an- 

 teriorly along the suture beyond the middle, frequently subuniting by a feeble 

 ray with each of the subbasal sjiots; sides behind the humeri faintly darkened. 

 Head subequal in width to the prothorax, densely pubescent, minutely punc- 

 tate, reticulate, somewhat dull, the eyes rather large, equal in length to the 

 tempora; antennaj slender, slightly incrassate, fully two-fifths as long as the 

 body. Prothorax rather small, globular, finely and sparsely ijunctate, shining 

 through the somewhat dense vestitiire, the basal line dilated at the sides; horn 

 well developed, differing somewhatuoticeably in the sexes; in the male smaller 

 and narrower, more acuminate, not at all constricted at base and coarsely, 

 deepljr dentellate, in the female larger and broader, feebly and finely dentel- 

 late, broadly rounded and almost entire toward apex, feebly narrowed at base; 

 crest abrujit, strong, limited throughout by a strongly elevated, acute and en- 

 tire ridge. Elytra distinctly less than twice as long as wide, twice as wide as 

 the prothorax, broadly rounded behind in both sexes, the sides parallel and 

 almost evenly arcuate throughout; humeral impression very feeble, the 

 seutellar wanting; disk densely, deeply and rather coarsely punctate, the de- 

 cumbent pubescence coarse, whitish, moderately dense, the erect setai long, 

 very abundant, coarse and conspicuous. Under surface densely pubescetit as 

 usual. Length 2.7-3.5 mm.; width 1.0-1.15 mm. 



Arizona (Tu9son). 



This is a well marked species of the monodon group, easily dis- 



