Brazilian Baring 143 



feebly tapering toward apex, scarcely as long as the prothorax, the antennae 

 black, with rather short scape, the first funicular joint nearly as long as the 

 next two, the seventh dilated, the club subglobular, about as long as the 

 two preceding joints and scarcely thicker than the seventh; prothorax a 

 fourth wider than long, the sides slightly converging and nearly straight, 

 gradually a little more converging and feebly arcuate beyond about the 

 middle to the apex, which is not in the least constricted or tubulate, slightly 

 prominent at the middle and two-fifths as wide as the base; surface with 

 rather strong and well separated punctures, becoming coarser, denser and 

 squamulose toward apex, close-set on the inferior flanks; basal lobe broadly 

 arcuate, without lateral impressions; scutellum quadrate, a little wider than 

 long, free; elytra just visibly longer than wide, much wider than the pro- 

 thorax and three-fourths longer, oval, the middle of the sides a little more 

 arcuate; humeri moderately prominent, rounded; grooves very coarse, 

 distinctly punctured along the bottom, attaining the base without dilation; 

 intervals with rather small but strong, loose and confused punctures; under 

 surface and femora with strong and rather close punctures; abdomen at 

 base with a broad and feeble, densely punctate and feebly squamulose 

 concavity. Length 4.7-5.0 mm.; width 3.2-3.3 mm. Paraguay. Dr. 

 Drake. Two specimens — apparently male parviclava n. sp. 



Body suboval and convex, rather more elongate and more polished, deep black; 

 beak (cf) nearly straight, feebly tapering, about as long as the prothorax, 

 densely sculptured and loosely squamulose; antennae black, nearly as in 

 the preceding; prothorax almost a third wider than long, the sides converging 

 and subevenly, rather strongly arcuate from base to apex; apex, sculpture 

 and vestiture nearly as in the preceding; scutellum somewhat shorter, more 

 transverse and more trapezoidal; elytra much more elongate, a fourth longer 

 than wide, three-fourths longer than the prothorax, otherwise nearly as in 

 parviclava, but more narrowly rounded at apex; grooves very coarse, dis- 

 tinctly punctate; intervals not quite flat, similarly punctate; male with the 

 first ventral segment broadly and deeply concave, strongly and closely 

 punctate medially, the interstices shining, the second segment with a trans- 

 verse and densely spongiose brown area at the centre, the fifth convex, 

 minutely, very densely punctate and setulose. Length 5.8-7.0 mm.; width 

 3.7-3.9 mm. Brazil (Chapada — campo). October. One specimen. 



abdominalis n. sp. 



Body somewhat as in abdominalis but still narrower and more elongate, nearly 

 similar in color, sculpture and vestiture; beak (c?) rather longer and just 

 visibly more arcuate, about as long as the head and prothorax, the latter in 

 profile distinctly less convex, smaller in size and only a fourth wider than 

 long, the converging sides from base to apex much less arcuate; scutellum 

 not so broad ; elytra subsimilar, but almost a third longer than wide, three- 

 fourths longer than the prothorax; grooves almost as coarse and a little 

 deeper; intervals narrower; male with the first ventral segment much more 

 deeply concave at the middle than in the preceding, the second segment with 

 a small transverse medial area at base, which is covered with coarser, dense 

 and silvery squamules, the fifth flatter than in the preceding species and 

 with stronger, more discrete sculpture. Length 5.3 mm.; width 3.2 mm. 

 Brazil (Chapada). March. One specimen constans n. sp. 



The head is not separated from the beak by any very definite 

 depression. The genus constitutes a very peculiar and isolated 

 type among the other allies of Centrinus. 



