Brazilian Baring 8i 



long as wide, the converging sides straight, slightly rounding in about apical 

 third, the subtubulate apex half as wide as the base; entire surface above 

 and beneath very smooth and impunctate; base margined by a fine irregular 

 line, the lobe small, narrowly rounded at tip; scutellum minute, subparallel, 

 slightly elongate, sinuato-truncate and smooth; elytra fully a third longer 

 than wide and gradually attenuate, with but feebly arcuate sides and very 

 narrowly rounded apex, the sides anteriorly parallel and broadly arcuate; 

 striae rather fine but distinct, catenulate, merely a little finer laterally, 9 and 

 10 broad, entire and strongly catenulate; mes-epimera longitudinally ridged, 

 impunctate; metasternum and side-pieces smooth, having internally an 

 arcuate series of very large shallow fovea;, the suture subobliterated; legs 

 coarsely and strongly sculptured and evidently setose; hind femora slender, 

 arcuate at apex, having beneath a few sharp serrules, the tibiae slender, 

 fluted. Length 1.8 mm.; width 1.15 mm. Brazil (Santarem). One speci- 

 men acutipennis n. sp. 



The rather distinct striation and basal pronotal line of acutipennis 

 will distinguish it at once from Iceviventris , although the general 

 form and the narrow attenuate elytra posteriorly are very nearly 

 the same; the base of the abdomen is hidden in the type of acuti- 

 pennis. 



Genestus n. gen. 



A separate genus seems to be necessary for a rather small species, 

 having a very peculiar rostrum, this being strongly arcuate, very 

 slender, equally thin and cylindric from base to apex and projecting 

 from the lower part of the head, almost exactly as in Costovia of 

 the Optatini, or as in Balaninus; but here, the mandibles are 

 dentate and decussate as in Diorymerus. The antennae are inserted 

 even behind basal third, with the narrow, elongate-oval and some- 

 what compact club about as long as the preceding six joints. The 

 prosternal sulcus before the coxae is very deep and abruptly formed, 

 more than capable of receiving the basal part of the beak, the 

 femora rather slender but sulcate beneath as usual, and the tarsal 

 claws slender, arcuate, free and diverging. The type is the fol- 

 lowing: 



Genestus filirostris n. sp. — Body moderately stout, sharply rhomboidal, the 

 subapical elevations of the elytra giving a discal truncation when viewed antero- 

 posteriad, shining, piceous-black, rufous above, the elytra piceous except toward 

 the humeri; beak as long as the head and prothorax, finely, sparsely punctate, 

 the head strongly and closely so throughout; prothorax more than a fourth wider 

 than long, having strongly converging sides, moderately and subevenly arcuate 

 from base to tubulation, which is well marked and two-fifths as wide as the base; 

 surface very smooth, minutely punctate at apex, more coarsely on the basal lobe 

 and less so along the basal margin, also sparsely at the lateral edges and more 

 coarsely down the inferior flanks; basal lobe strong, rounded, with a rather deep 

 sinus at the middle of the apex; scutellum moderate, as long as wide, feebly 

 trapezoidal, flat and closely punctate; elytra but little longer than wide, a fourth 

 wider than the prothorax, rapidly parabolic, the humeri prominent and only 

 narrowly rounded; striae all distinct, remotely punctulate, finer laterally, 9 and 

 10 but little stronger, somewhat less punctate, the sutural dilated and catenulate 

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



