144 Memoirs on the Coleoptera 



Tenemotides n. gen. 



Although possessing the same tibial characters, the species of 

 this genus differ very greatly from those of Tenemotes in their 

 small and abbreviated, smooth and shining body, wholly glabrous, 

 excepting the densely albido-squamulose scutellum, and in the 

 relatively very large prothorax. The beak in the male is longer 

 than the elytra, rather strongly, evenly arcuate, strongly sculptured 

 and gently tapering from the rather thick base to apex, while in 

 the female it is shorter, not longer than the elytra and more abruptly 

 slender, smooth and cylindric beyond the antennae, which are near 

 basal third. The prosternum has a very moderate and not very 

 sharply limited channel, at the middle of the margins of which — 

 not just before the coxae as usual — there is a very small subacute 

 tooth in the male. The mandibles are straight but short, the 

 anterior coxae moderately separated and the connate tarsal claws 

 are rather small and slender. There are at least two species as 

 follows : 



Form short, oblong-suboval, convex, shining, black, the prothorax obscure rufous; 

 beak long, arcuate, separated from the head by a feeble depression; antennae 

 rather long and slender, near basal third, piceous, the first funicular joint as 

 long as the next two, the second fully twice as long as wide, the club rather 

 narrowly oval, as long as the preceding four joints; prothorax a third (o*) 

 to two-fifths ( 9 ) wider than long, large, only very little narrower than the 

 elytra, the sides subparallel and feebly arcuate for two-fifths, thence broadly 

 rounded, becoming oblique and nearly straight to the apex, which is tubulate, 

 with arcuate tip and about a third as wide as the base, the basal lobe punctate 

 and feebly sinuate; surface with only remote and infinitesimal punctulation; 

 scutellum flat, suboval, a little wider than long, well developed; elytra as 

 wide as long, triangular, with arcuate sides and narrowly rounded apex, one- 

 half longer than the prothorax; middle of the sides a little more arcuate; 

 humeri only slightly prominent, rounded; grooves strong and deep, sharply 

 defined and scarcely punctate, not dilated at base; intervals flat, virtually 

 smooth; abdomen convex, the basal segment rather closely punctate, im- . 

 pressed along the median line (c?) or nearly even (9); femora coarsely, 

 longitudinally punctato-rugose; male larger than the female. Length 3.2- 

 3.7 mm.; width 2.15-2.25 mm. Brazil (Chapada — forest). March and 

 November. Three specimens orbatus n. sp. 



Form and general appearance, sculpture and coloration almost as in the preceding; 

 beak and antennae (d 1 ) nearly similar; prothorax differing in having the 

 sides more evenly arcuate, becoming parallel only near the base, and with 

 the tubulation much narrower, being much less than a third as wide as the 

 base; elytra nearly similar, but still more narrowly rounded at tip; abdomen 

 in the male with the strongly and closely punctate basal segment somewhat 

 more convex, narrowly, linearly impressed along the middle; met-episterna 

 more finely, less closely punctate, especially toward their inner margin. 

 Length 3.8 mm.; width 2.35 mm. Brazil (Chapada — forest). November. 

 A single male dissimulans n. sp. 



The very small and feeble tooth on each edge of the prosternal 



