124 Memoirs on the Coleoptera 



punctulate and with a few slender squamules; scutellum moderate, trans- 

 verse, sinuato-truncate at apex; elytra barely longer than wide and two- 

 thirds longer than the prothorax, subparabolic, but with relatively narrowly 

 rounded apex; grooves abrupt but not very coarse, the fine and remote 

 punctures along the bottom unusually distinct; abdomen (o 71 ) broadly but 

 distinctly impressed medio-basally, the impression sparsely and finely punc- 

 tate; prosternum with two slender, erect and somewhat arcuate processes; 

 hind femora closely, very coarsely and irregularly punctate. Length 5.5- 

 5.65 mm.; width 3.75-3.9 mm. Brazil (Chapada). March and November. 

 Two males, found on flowers near the forest inscitus n. sp. 



Body similarly rhomboidal but much smaller in size; beak strongly and unevenly 

 punctate, moderately arcuate, as long as the head and prothorax (o 71 ), 

 slightly shorter, with smoother distal part (9); antennae blackish, the first 

 funicular joint about as long as the next two, the club moderate, a little 

 narrower in the male; prothorax campanulate, three-fifths wider than long, 

 the subevenly and strongly arcuate sides gradually subparallel basally; 

 tubulation two-fifths (c 71 ) or three-sevenths ( 9 ) as wide as the base, the 

 basal lobe obtusely rounded, with punctulate and feebly, medially subsinuate 

 margin, the lateral impressions very moderate; scutellum very moderate, 

 slightly transverse, narrowed from the sinuate apex to the base; elytra as 

 long as wide, two-thirds longer than the prothorax, triangular, with the 

 oblique sides bisinuate, as usual in this section; grooves as in the preceding, 

 very deep; prosternum with very small and erect, sharp ante-coxal processes, 

 the abdomen distinctly impressed and sparsely punctate medio-basally (o 71 ), 

 or without spiniform processes, the first abdominal segment convex and very 

 densely punctate throughout and with a deep, sharply impressed median 

 line (9). Length 4.5-4.65 mm.; width 3.2 mm. Brazil (Chapada). 

 March and April. Three specimens insulsus n. sp. 



Body nearly as in insulsus but still smaller, rhomboidal; beak (9) short, 

 moderately arcuate, thick, strongly, closely sculptured and barely as long 

 as the prothorax; antennae black, well developed, the first funicular joint 

 notably thick, a little longer than the next two, the second but little longer 

 than wide, the club short, rapidly narrowing at apex and as long as the four 

 preceding joints; prothorax three-fifths wider than long, the sides converging 

 and broadly arcuate, more rounded anteriorly to the tubulation, which is 

 distinctly less than half as wide as the base; basal lobe punctate and feebly 

 medially sinuate at apex, the lateral impressions subobsolete; scutellum short, 

 small, broadly sinuate at apex; elytra triangular, with the oblique sides 

 distinctly though broadly arcuate medially, and the apex narrowly rounded, 

 evidently longer than wide, much wider than the prothorax and slightly 

 less than twice as long, the grooves strong, deep and smooth; under surface 

 sparsely punctate; prosternum glabrous, with wide and deep, abrupt chan- 

 nel, the first abdominal segment ( 9 ) convex, with strong but sparse 

 punctures and a very deeply impressed longitudinal line. Length 3.75 mm.; 

 width 2.4 mm. Brazil (Chapada). March. One specimen ... debilis n. sp. 



30 — Body more oval, larger in size; beak rather thick, moderately arcuate, 

 subcylindric, strongly and closely sculptured; first funicular joint as long as 

 the next two, the second twice as long as wide, the outer joints gradually 

 broader; prothorax fully one-half wider than long, campanulate, the strongly 

 arcuate sides parallel basally, the rounded basal lobe punctured and slightly 

 sinuate at apex, the lateral impressions conspicuous; scutellum quadrate, 

 smooth, only very little wider than long; elytra as long as wide, three-fourths 

 longer than the prothorax and a fifth wider, oval in form, the median con- 

 vexity of the flanks wide and somewhat feeble; grooves deep and abrupt as 

 usual, moderately coarse; femora strongly, loosely punctate, the spicule of 



