132 Memoirs on the Coleoptera 



basal margin; prosternum with a deep and smooth sulcus; abdomen in the 

 type flattened and minutely, remotely punctulate anteriad, with some scat- 

 tered stronger punctures basally, which are more distinct than in any speci- 

 men of testaceicollis. Length 5.8 mm.; width 3.7 mm. Brazil (Chapada — 



campo). December. One specimen bicoloratus n. sp. 



47 — Form rather narrowly rhombic-oval, with only slightly prominent humeri, 

 polished black, with red prothorax, glabrous above, but with the thoracic 

 lobe and scutellum densely luteo-squamulose; under surface rather densely 

 luteo-squamose along the median parts, the abdomen subglabrous; beak 

 slender, cylindric, only feebly arcuate and as long as the elytra, sparsely 

 punctulate, more strongly and irregularly at the sides basally; antennae 

 obscure rufous, slender, submedial, the first two funicular joints much 

 elongated, the second the less but about as long as the next two, the club 

 very moderate, about as long as the preceding three joints; prothorax only 

 a fourth to third wider than long, the sides feebly converging and feebly 

 arcuate from the base, broadly rounding anteriorly to the tubulation, which 

 is rather short and less abrupt than usual; basal lobe broadly, obtusely 

 rounded, without lateral impressions; scutellum flat, quadrate, a little 

 wider than long; elytra elongate-oval, nearly a third longer than wide, 

 scarcely a fifth wider and about three-fourths longer than the prothorax, the 

 humeri broadly rounded and but slightly prominent; grooves abrupt, deep, 

 nearly smooth, the second not dilated basally and not quite attaining the 

 basal edge; femora rather slender, strongly punctate, the spicules moderate; 

 prosternum moderately sulcate; sexual characters apparently very slight. 

 Length 3.7-4.6 mm.; width 2.25-2.7 mm. Brazil (Chapada — campo). 

 November. Eight specimens dichrous n. sp. 



It is rather beyond doubt that a number of the species above 

 described have already been published by Schonherr, but it is 

 impossible to identify them surely from the published descriptions, 

 and it will be much easier for one having the Schonherr types 

 before him, to locate them in the above series by the indicated 

 tangible structural characters — almost wholly ignored in the original 

 descriptions — and thereby determine the proper synonymy; this 

 remark applies, also, throughout the Barid series here brought to 

 notice. It is better to do this, even with the accompanying evil 

 of some synonymy, than to guess at identifications from the wholly 

 superficial descriptions formerly published, or in lieu of this, to 

 defer all progressive work on the Barid fauna of Brazil, for it is 

 practically impossible for me to actually view the Schonherrian 

 types. I am even uncertain of the above identification of ruficollis, 

 although sanguinicollis is almost certainly identified correctly. 

 Either divisus, latabilis or decorus is probably the pallidicollis of 

 Boheman, but which one, it is impossible to state under present 

 lights, as it is also to state definitely the identity of such conspicuous 

 entirely black species as decens and gravidulus. 



The sexual characters of some species, such as convexus and 

 consentaneus, are very remarkable, not considering even the longer 

 beak of the male, which is still more accentuated in certain Mad- 

 arini. In such forms as those mentioned, the head and thoracic 



