Brazilian Baring 4 x 7 



evenly convex, rather strongly, not densely punctate, with obsolete first 

 suture as usual. Length 2.65-2.7 mm.; width 1. 6-1 .65 mm. Brazil (Cha- 

 pada— campo). October. Two specimens elliptica n. sp. 



The Colombian Baridius mutilus Boh., is I think distinct from 

 any of the above species; it is said to have the rostrum slightly 

 arcuate. This genus has been reported from the Central American 

 regions by Mr. Champion. 



Tribe Eurhinini 

 It seems desirable to separate three conspicuous genera as a 

 distinct tribal group; these genera are Eurhinus, Eurhinopsis and 

 Barycerus. They have a number of structural points in common, 

 and are much more closely allied to the very composite Madarini 

 than they are to the Barini. The posterior lobe of the prosternum, 

 for example, extends about as far as the mesocoxal tangent, but 

 the general plane of the surfaces is less uniform than in the Madarids; 

 the general habitus of the body does not harmonize at all well with 

 the Barini, except in Barycerus, where also the generally pervading 

 brilliant metallic coloration entirely disappears; it is this brilliant 

 metallic lustre, among other features, that causes the tribe to stand 

 alone between the Madarids and Barids. The antennal funicle is 

 often peculiarly modified, and its very thick compact form in many 

 species of Eurhinus signifies an affinity with Barycerus, where this 

 feature is extremely developed. The genera may be characterized 

 as follows: 



Tarsal claws connate; beak thick but moderately long in Eurhinus 2 



Tarsal claws free, divergent, arcuate and rather slender 3 



2— Antennal funicle gradually very thick and subequal in width to the dub 

 distally, the club short, conoidal and gradually formed; body rhomboidal, 

 feebly sculptured as a rule. [Type E. cyaneus Gyll.] Macrorhinus Latr. 



Eurhinus 



Antennal funicle much more slender, the club narrower and more elongate-oval; 



body smaller, oblong, short and broad, attenuated behind, the sculpture 



closer and more conspicuous as a rule; beak shorter. [Type E. aruginosus 



Chmp.] Eurhinopsis 



3— Body oblong-oval, moderately convex; beak shorter and very thick, as usual 

 not separated from the front by an obvious impression; antennae medial, 

 very thick, the club short, pointed, ovulate and not wider than the funicle; 

 sculpture fine and sparse above. [Type B. collaris Gyll.] Taxicerus Dej. 



Barycerus 



The body is shining and wholly glabrous throughout, the femora 

 mutic and the pygidium vertical and well developed, differing only 

 slightly in the sexes. 



Eurhinus Schon. 



The body in this genus is moderately large, thick, convex, gla- 

 brous, polished, very feebly sculptured above and of a rhomboidal 



T. L. Casey, Mem. Col. X, Oct. 1922. 



