470 Memoirs on the Coleoptera 



The beak is not at all compressed and there is no lateral groove 

 at the sides beyond the antennae, as evident in so many of the 

 Centrinid genera. 



Stereobaris n. gen. 



This is the most extensive genus among the large and conspicuous 

 Barids of Brazil and includes numerous species. The body is more 

 or less rhombic-suboval, convex and with very coarse sculpture, the 

 foveas upon the fine elytral striae being relatively very large and 

 elongate-oval, somewhat as in Megalobaris; the surface is glabrous 

 above, but, beneath, the coarse punctures bear each a remarkable 

 decumbent scale, more or less divided apically along the lines of 

 striation, so that in the very large scales of metallica, the truncate 

 apex appears to be fringed; in delecta and some other species, the 

 scales are narrow, parallel and much less conspicuous, though of the 

 same general character. The beak is rather thick, evenly cylindric, 

 uncompressed and feebly arcuate, separated from the head by the 

 feeblest sort of impression, coarsely punctured basally and finely, 

 sparsely so distally. Antennae submedial, moderately long, with 

 elongate-oval and gradually pointed club, pubescent, but glabrous 

 at the extreme base, the club very much smaller and the first 

 funicular joint longer in the female than in the male. Prosternum 

 but feebly impressed, separating the coxae by one-half to a third 

 their width, the moderate posterior lobe more or less gently sinuate 

 medially at tip. The prothorax is not definitely tubulate at apex, 

 the rounded basal lobe more or less prominent, the scutellum free, 

 subquadrate and smooth and the elytral striae notably fine, with 

 large and deep, elongate-oval foveae. The pygidium is rather 

 strongly oblique, small, and it is often very prominent along the 

 middle distally. The genus is rather closely related to the pre- 

 ceding, but differs radically in the system of elytral sculpture and 

 in the vestiture of the under surface, also in the much smaller 

 antennal club. The species now at hand are the following: 



Pronotum feebly impressed medially toward base; larger species; color black, 



with strongly bronzed lustre 2 



Pronotum not impressed; coloration diverse; size generally much smaller 5 



2 — Elytra but little longer than wide, the sides strongly oblique, the humeral 

 prominences rounded but large and conspicuous. Scales of the under surface 

 very large, broad and conspicuous; beak (o 71 ) cylindric, feebly arcuate, 

 four-fifths as long as the prothorax, bronzed and very coarsely punctate 

 basally, gradually black and finely, sparsely punctured distally; antennae 

 black; prothorax very convex in lateral profile, a third wider than long, the 

 sides rather strongly arcuate, gradually becoming parallel basally; apex 

 evidently less than half as wide as the base; punctures extremely coarse, 

 polygonally crowded laterally, elsewhere moderately separated, sparse at the 

 sides of the basal impression, without trace of median smooth line; scutellum 

 longer than wide, widest near the rounded apex, smooth ; elytra a fourth or 



