Brazilian Baring 211 



sifbrhombic; prothorax a third wider than long, the sides moderately con- 

 verging and feebly arcuate, somewhat rapidly so anteriad to the short 

 truncate tubulation, which is much less than half as wide as the base; surface 

 finely, remotely punctate, gradually rather coarsely and more closely laterad; 

 basal lobe broad, gradual and very broadly, evenly rounded; scutellum a 

 little wider than long, with very oblique sinuate sides and acute and very 

 prominent angles, the apex sinuato-truncate; elytra barely a third longer than 

 wide, nearly a third wider than the prothorax and much more than twice 

 as long, evenly parabolic, with somewhat prominent, rounded humeri; 

 grooves about a third as wide as the nearly smooth intervals, evidently 

 punctate along the bottom; male with the rather deep basal impression 

 finely, remotely punctulate and with slender hairs. Length 5.25 mm.; 

 width 2.85 mm. Brazil (Chapada). November. On flowers, near the 



forest. One specimen obesula n. sp 



Form less stout and smaller in size but similar in outline, coloration, lustre and 

 vestiture; beak (o 71 ) nearly similar but relatively longer, distinctly longer 

 than the head and prothorax, the antennae subsimilar; prothorax smaller, 

 distinctly shorter, two-fifths wider than long, similar in outline and sculpture, 

 except that the punctures laterally are not quite so coarse and, on the whole, 

 somewhat sparser; basal lobe notably narrower and more strongly rounded 

 at tip, though gradually formed; scutellum not wider than long, the sides 

 less oblique and the acute angles less prominent; elytra similar but not so 

 broad, slightly less prominent at the humeri, the grooves somewhat less 

 coarse and less strongly punctate; base of the second and fourth intervals 

 usually with a few squamules, besides the larger spot at the base of the second; 

 sexual characters similar; female a little stouter than the male, with the 

 beak no longer but more rapidly inflated at base and more evenly cyhndric 

 and smoother beyond the antenna?, which are inserted distinctly behind the 

 middle, and therefore much more posterior than in the preceding subgenus. 

 Length 4.0-5.0 mm.; width 2.15-2.75 mm. Brazil (Chapada— forest). 

 November. Eight specimens temperata n. sp. 



It is probable that Valliopsis is a rather large genus, but, according 

 to all evidence now available, it seems to be wholly wanting in the 

 Amazon Valley. The absence of the femoral fringe of the male in 

 lateralis appears to be entirely exceptional in the subgenus Valliopsis 

 and is quite remarkable. 



Zygozalestes n. gen. 



The considerable series of genera from this point to the end of 

 the tribe Centrinini, is characterized by mandibles that are straight 

 or only slightly irregular on their inner edges and not at all decussate, 

 usually forming a prominent acute angle when closed. The present 

 genus is peculiar in its short, thick and strongly compressed beak, 

 separated from the head by a very large deep sulcus, its upper 

 surface obtusely prominent near basal third and gibbous at the 

 sulcus. This form of beak is presaged to marked degree by the 

 rather short and very thick compressed beak prevailing in the two 

 preceding genera, but there the basal dividing sulcus is merely a 

 moderate simple impression, and the sculpture of the compressed 

 sides is very different, for here, instead of the coarse ridges of the 



