Brazilian Barlnve 155 



what closely but not very coarsely sculptured; antennae nearly as in the 

 preceding, but with the club rufescent; prothorax shorter, one-half wider 

 than long, the converging sides feebly arcuate, rounding anteriorly to the 

 tubulation, which is half as wide as the base; punctures strong, moderately 

 close, a little less so medially, the smooth median line evident though not 

 very sharply defined; basal lobe small, narrowly sinuato-truncate at apex, 

 the scutellum small, elongate-oval as in the preceding, almost twice as long 

 as wide; elytra evenly oval, rather more than a fourth longer than wide, 

 evidently wider than the prothorax and distinctly more than twice as long; 

 humeri slightly prominent but broadly rounded; grooves very moderate, 

 with strong and very evident, well separated punctures, the intervals flat, 

 very minutely, sparsely punctulate; sterna strongly, closely punctate, the 

 abdomen finely, sparsely and very inconspicuously so, not modified basally 

 in the examples at hand. Length 1. 85-2.1 mm.; width 0.85-0.9 mm. 



Brazil (Santarem). Three female specimens rhomboidellus n. sp. 



Form more oval, more obtuse behind, black, the whitish squamules of the upper 

 surface minute, very slender and sparse in single feebly marked line on the 

 intervals; beak rather strongly arcuate, strongly and closely sculptured and 

 as long as the head and prothorax ( 9), or a little shorter, thicker and not 

 quite so arcuate (d"); antennae black, medial, of the usual structure; pro- 

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

 arcuate, gradually broadly rounding and a little more converging beyond the 

 middle, to the moderately marked tubulation, which is truncate and rather 

 more than half as wide as the base; punctures coarse, notably strong and 

 somewhat close, without definite median smooth line; basal lobe small, 

 gradual, obtusely rounded; scutellum small, oblong-oval, not one-half longer 

 than wide; elytra oval, barely a fourth longer than wide, rather distinctly 

 wider than the prothorax and more than twice as long, somewhat obtusely 

 rounded behind, the basally rounded humeri only very slightly prominent; 

 grooves moderate, not very shallow and not or very indistinctly punctate, 

 differing remarkably from the two preceding in this respect; intervals rather 

 less broad and with single series of very small, though more distinct punc- 

 tures; under surface strongly and closely punctate, the abdomen finely, 

 sparsely so and strongly shining; legs piceous; male with a moderate im- 

 pression at the base of the abdomen. Length 1. 65-1 .88 mm.; width 0.8- 

 0.88 mm. Brazil (Santarem). Five specimens parvus n. sp. 



The species hold together very well, excepting constrictiilas, and 

 it is possible that this may represent a closely allied genus, on 

 account of the broader and more shouldered prothorax and very 

 different form of the scutellum, also the decidedly larger size of 

 the body, but I do not feel disposed to suggest a generic separation 

 at present. In the form of the prothorax we find analogous dis- 

 crepancies in the genus Stethobaris . It is probable that this genus 

 is a rather large one in the neotropics. 



Stethobaridia n. gen. 



In this genus the body is almost evenly oval, convex and polished, 

 black, subglabrous, there being only a single interstitial line of very 

 small fine brownish squamules, generally with some others in the 

 series that are longer and white; each puncture of the under surface 



