278 Memoirs on the Coleoptera 



also densely squamose throughout; anterior coxae separated by scarcely a 

 third of their width. Length 2.8 mm.; width 1.25 mm. Brazil (Rio Grande 

 do Sul). One specimen opertus n. sp. 



Form, color, sculpture and vestiture nearly as in naso, the slender and uniform, 

 still more widely separated scales whiter in color; beak (9) shorter and 

 thicker than in the same sex of that species, only a little longer than the head 

 and prothorax, more compressed basally, with long sulci at the sides, and of 

 very different shape, being not evenly arcuate as in naso, but bent at about 

 the middle, thence straighter to the base, where the dorsal dividing reentrant 

 angle is much deeper; antennae rufous, submedial; prothorax differing in 

 having the basally subparallel sides rounding and converging more gradually 

 from a point more medial than in naso; elytra nearly similar in outline and 

 more than twice as long as the prothorax, the intervals alternating more 

 obviously in width, the narrow confused scales rather larger but somewhat 

 less abundant; under surface with the scales larger and denser than in 

 naso. Length 2.8 mm.; width 1.28 mm. Brazil (Santarem). One female 

 example ovoideus n. sp. 



4 — Body differing from the preceding in having the slender pronotal squamules 

 less sparse, though not dense in about lateral fourth; color black, the legs 

 obscure rufous; vestiture nearly white, dense on the scutellum and forming 

 single series on most of the strial intervals; beak (d" ) rather thick, feebly 

 arcuate, closely, finely sculptured and squamulose, smoother apically, only 

 about as long as the prothorax, with the nearly black antennae well beyond 

 the middle, or ( 9 ) differing but slightly, being just visibly longer and a 

 little less thick, almost similarly sculptured, the antennae slightly beyond 

 the middle but not so far as in the male, in both sexes separated from the 

 head by scarcely a trace of impression, differing thus very much from the 

 preceding; prothorax a fourth (d 71 ) or slightly more (9) wider than long, 

 the sides subparallel and feebly arcuate for a greater distance than in the 

 preceding species, becoming rounded and oblique beyond the middle; 

 punctures strong but well separated and with a distinct smooth median 

 line; elytra oval, rather obtuse at apex, barely over a fourth longer than 

 wide and somewhat less than twice as long as the prothorax; grooves deep; 

 intervals with rather strong and confused, close-set punctures, uniserial on 

 the narrower; abdomen and met-episterna very densely squamose, the 

 former {d 1 ) having a scarcely visible impression medio-basally, this clothed 

 with very slightly less dense squamules, the fifth segment scarcely modified. 

 Length 2.7-2.85 mm.; width 1.15-1.25 mm. Brazil (Santarem). Three 

 specimens diversus n. sp. 



Body smaller and narrower than in the preceding, with relatively smaller pro- 

 thorax, the coloration, lustre and vestiture almost similar, the large white 

 scales beneath similarly dense, but still denser on the pro- and metasterna; 

 beak (o 71 ) nearly similar, but with the antennae less ultra-median, somewhat 

 longer than the prothorax, which is smaller, with the sides feebly converging 

 and less strongly rounded beyond the middle than in diversus, the apex 

 similar; punctures equally coarse but more clearly isolated among them- 

 selves; scutellum similar; elytra nearly similar in outline but narrower, 

 with the arcuate sides somewhat less oblique and the apex relatively slightly 

 more obtuse,. evidently as wide as the prothorax and twice as long; sculpture 

 and vestiture subsimilar; male abdomen densely squamose, with a large 

 shallow basal impression, rather more distinct than in diversus and more 

 evidently less squamose than the rest of the surface. Length 2.3-2.45 mm.; 

 width 1. 15 mm. Brazil (Santarem). Four specimens minor n. sp. 



Body slightly larger, stouter and more oblong than in diversus, similar in colora- 

 tion and vestiture, but with the interstitial squamules in even single lines; 



