466 Memoirs on the Coleoptera 



widely separated and feebly asperate. Length 2.0 mm.; width 0.75 mm. 

 Brazil (Chapada — forest). November. One specimen asperula n. sp. 



There are remarkable incongruities in the form and sculpture of 

 the beak and in the relative structure of the antennae in this genus, 

 rendering the species as described above definite and rather free 

 from doubt; they probably all occur in flowers of various species. 



Megalobaris n. gen. 



We come now upon a series of large and conspicuous species, 

 hitherto placed in Baris, or the Schonherrian Baridius, but dis- 

 tinguished by such radical structural differences that they must be 

 assigned to several genera, all very distinct from the much smaller 

 Baris proper. Megalobaris is represented at present by a single 

 species, the largest and most beautiful — if this expression may be 

 allowable — of the entire tribe. The body is broad, rather faintly 

 subrhombic-oval, convex and shining, with extremely coarse but 

 not at all dense sculpture and wholly glabrous and metallic integu- 

 ments. The beak is cylindric, feebly arcuate, just visibly tapering 

 from base to apex, separated by a very feeble impression and 

 without impressed canals beyond the antennae, these submedial 

 and moderate, the first funicular joint as long as the next three, 

 the outer joints compact and increasing in width, the club small, 

 conically pointed, not as long as and barely wider than the three 

 preceding joints, pubescent, with short glabrous basal segment. 

 Prosternum short, broadly, feebly impressed and separating the 

 coxae by a third their width, the posterior lobe moderate, with a 

 deep medial sinus at apex. Prothorax obliquely tubulate at apex, 

 the basal lobe prominent and rounded, the scutellum free, parallel, 

 truncate, slightly longer than wide and crossed by three deep and 

 punctate, setulose grooves. Elytra with extremely fine and feeble 

 striae, bearing very large deep elongate-oval foveas; the striae become 

 however very coarse and deep basally and distally. Pygidium 

 moderate, circularly rounded, sharply and prominently umbonate 

 below the middle. First ventral suture fine but distinct throughout 

 the width. The type may be described as follows: 



Megalobaris resplendens n. sp. — Broad and convex, the integuments polished 

 and devoid of any minute sculpture, cupreous, more aeneous anteriorly; under 

 surface greenish-metallic, the legs blue; beak (9) rather thick, two-thirds as 

 long as the prothorax, shining, black, minutely, sparsely punctulate, becoming 

 coarsely punctate and cupreous in about basal fourth; antennas nearly black, 

 shining; prothorax three-sevenths wider than long, the sides converging and 

 broadly, subevenly arcuate to the oblique-sided tubulation, which is three-sevenths 

 as wide as the base; disk a little wider near than at the base; punctures deep, 

 very coarse and subconfluent at the sides, less coarse and rather dense thence 

 throughout anteriorly, but coarser and widely separated behind the middle, with 



