Brazilian Baring 369 



width 1.15-1.35 mm. Brazil (Chapada — forest). May. On flowers in 



clearings. Eight specimens conspersa n. sp. 



Body narrowly rhomboid, more convex, deep black throughout, the interstices 

 not quite so shining, the sculpture coarser; white squamules above wanting 

 on the pronotum, except in a loose median line in basal half, close on the 

 scutellum and in single close line on the first strial interval, the other intervals 

 with very small slender brown squamules; beneath, the white scales are 

 oval and slightly separated, but dense on the pro- and mesosterna; beak in 

 the type half as long as the body, feebly arcuate, slender, cylindric and 

 finely, sparsely punctate, gradually much thicker, compressed and strongly 

 punctured basally; antennae slightly post-median, piceous; prothorax a 

 fourth wider than long, the sides parallel and feebly arcuate basally, gradually 

 rounded and oblique beyond the middle to Jthe apex, which is fully half as 

 wide as the base; punctures coarse, deep and almost in mutual contact, 

 without smooth median line; elytra a third longer than wide, a fifth wider 

 than the prothorax and four-fifths longer, the oblique sides only very feebly 

 arcuate, the apex strongly rounded; grooves very coarse and strongly 

 punctured, as wide as the intervals, the punctures of which, in single series, 

 are rather small and well separated; abdomen without distinct sexual 

 marks. Length 2.7 mm.; width 1.3 mm. Brazil (Santarem). One speci- 

 men sculpta n. sp. 



There is reason to believe that the type of sculpta is a male, but 

 it is not possible to state this conclusively. 



Zyzzyva n. gen. 



In this singular genus the body is oblong-oval, convex and clothed 

 very densely and uniformly above with parallel, ochreous- yellow 

 scales, those of the under surface less dense, shorter, whiter and very 

 narrowly separated. The beak is short, thick, rapidly but gradually 

 tapering distally and carinate above, not separated from the head 

 by an impression. The mandibles are peculiar, being large, flat 

 and triangular, arcuate externally, their truncate inner margin 

 obtusely quadridentate. Antennae slender, slightly ultra-median, 

 with long scape, the first two funicular joints elongate, the second 

 the shorter, all the succeeding joints a little longer than wide, the 

 club small, oval, as long as the three preceding joints, with its first 

 segment about half the mass. The prosternum is flat, feebly 

 constricted at apex, narrowly separating the coxae, its posterior 

 lobe not broad, bilobed at tip and extending to the tangent line of 

 the middle coxae, the legs simple, not very long or slender. Pro- 

 thorax not at all tubulate at apex, the base perfectly straight, with 

 a distinct and rounded, gradually formed lobe, the scutellum small, 

 rather free and quadrate, but wider than long and only sparsely 

 punctate, not densely squamose, the elytral striae moderate and the 

 pygidium vertical, as long as wide, evenly and feebly convex and 

 with its apex bilobed. The type is as follows: 



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



