574 ' Coleopterological Notices, IV. 



Prothorax completely non-tubulate ; elytral and pronotal vestiture dis- 

 posed in dense sharply-defined longitudinal lines ; beak slender, exces- 

 sively arcuate, the antennae inserted behind the middle, the scape very 

 short and extending only two-tliirds the distance thence to the eyes... VII 

 Anterior coxse narrowly separated. 



Beak slender, with the antennse inserted behind the middle, dissimilar in 

 the sexes, shorter, almost evenly arcuate and cylindrical in the male, 

 longer, nearly straight but abruptly bent near the base and broadly, 

 gradually flattened toward apex in the female; prosternum not im- 

 pressed, but with a small subdenuded point, from which the scales 

 radiate in all directions ; scutellum very small, rounded, glabrous ; 



vestiture more or less uneven Till 



Beak rather stout and cylindrical, the antennaj inserted beyond the mid- 

 dle, the scape extending almost to the eye IX 



Male without secondary sexual modification of the prosternum or trochanters, 

 but having the outer joints of the antennal funicle obliquely truncate and 

 often prominent internally, and tlie basal joint of the club with a large 

 glabrous area on the inner side, at the middle of which there is a tumid 

 or dentiform process ; pygidium with the apical portion exposed in both 

 sexes ; anterior coxje narrowly separated, tlie prosternum generally with 

 a deep transversely oval pit behind the apical margin ; basal impression 

 of the beak almost obsolete ; scutellum rather large and always densely 

 albido-pubescent X 



The species are numerous and are equally abundant in South 

 America ; they are generally small and most of the large Brazilian 

 forms will have to be assigned to other diverse genera. Those of 

 the United States may be thus distinguished: — 



Subgenus I. 

 Elytral intervals alternately more densely punctured and pubescent. 



Pronotal punctures rather coarse, deep, rounded, not at all coalescent ; 

 beak in the male barely as long as the head and prothorax and very 



thick, especially toward base 1 puiictirostris 



Pronotal punctures finer, subcoalescent longitudinally ; beak in the male 

 much smoother in apical half, more slender, less distinctly robust toward 



base and fully as long as the head and prothorax 2 laevirostris 



Elytral intervals narrower, all coarsely, sparsely and rugosely punctate ; 



body shorter and more broadly oval ; upper surface sprinkled with large, 



widely distant, white scales. 



Prosternal processes of the male moderately long ; scattered scales of the 



elytra long and narrow ; pronotum with oblique, interrupted rugae and 



coarse punctures 3 striatil'OStl'is 



Prosternal processes in the form of very feeble cusp-like elevations of the 

 anterior margin of the coxal cavity ; scattered scales of the elytra 

 broad and oval. 



