Brazilian Baring 4 2 9 



and moderately convex in profile, the sides moderately converging and evenly, 

 somewhat feebly arcuate from base to the rather rapid apical narrowing the 

 tubulation gradually formed, although rather long, and two-fifths as wide as 

 the base; punctures coarse though well separated laterally and apically, min- 

 ute and remote medio-basally, with a distinct impunctate median line; scutel- 

 lum with a few punctures; elytra oblong-suboval, very obtusely rounded behind, 

 somewhat longer than wide, a little wider than the prothorax and two-thirds 

 longer, the humeri slightly swollen; grooves moderate, feebly crenulate, coarsely 

 exarate at the sides and apex, the intervals with remote and infinitesimal 

 punctulation; under surface with moderate sparse punctures the abdomen 

 feebly concave medio-basally, the fifth segment short, with the apex feebly 

 deflexed. Length 5.7 mm.; width 3.25 mm. Brazil (Chapada— campo). Nov- 

 ember. One specimen. 



I have assumed that the specimen above described represents 

 collaris, but there are certain points in the original description that 

 are somewhat irreconcilable; for instance, it is said of collans that 

 the scutellum is rounded behind and rufous, here it is rectilmearly 

 transverse at apex and black. 



Tribe Barini 

 This tribal group is composed of a considerable number of genera, 

 differing from some of the less characteristic Madarids only in 

 having the continuity of the sternal surfaces interrupted behind 

 the prosternum. Prosternal spines in the male are wanting, but in 

 Trogatia and Balbus, there are two short tubercles, which may be 

 regarded as rudimentary or vestigial spines; the genus Umno- 

 baroides, which has well developed spines and was assigned to the 

 Barini by Mr. Champion, is synonymous with the Madand genus 

 Parisoschcenus. The pygidium is more or less nearly vertical, and 

 is sometimes short and hidden by the tips of the elytra from a 

 vertical viewpoint, as in Glyptobaris, the great obliquity of this 

 part as well as the remarkable sexual specialization of the beak, so 

 frequently observable among the typical Madarids, being unknown 

 here The genus Sonnetius, previously considered (p. 321) possesses 

 the sternal characters of the present tribe, with the extremely 

 oblique prominent pygidium of Conoproctus, % and, in addition a 

 very long but sexually much modified beak, so that the establish- 

 ment of a special tribe for it seemed warrantable. 



The transitional genera between Barini and Madarmi are chiefly 

 those allied more or less closely to Ampeloglypter. For instance, 

 Linoma, Linomaspis and the Pseudobarids— Pseudobans,^ Hetero- 

 sternus and Craptus— that I have assigned to the Barini below, 

 could almost as well be placed in the Madarini near Ampeloglypter, 

 and it is this group of genera which now prevents an accurate 

 delimitation of these two tribal groups, perhaps rendering necessary 

 an additional tribe based upon Ampeloglypter, Onychobans and 



