176 Memoirs on the Coleoptera 



long, with long and conspicuous diverging claws. Only females 

 are known, so that I am unable to state whether or not there 

 may be antecoxal spines in the male; it seems probable, how- 

 ever, that these exist. The two species are as follows: 



Body elongate-oval, shining, black, subglabrous, the slender squamules of the 

 elytra in general small and dark and in single line, a little paler on some of 

 the intervals posteriorly and coarser and whitish basally, especially toward 

 the scutellum; beak ( 9 ) about a third longer than the head and prothorax, 

 rufo-piceous, the first funicular joint nearly as long as the next three, the 

 second scarcely one-half longer than wide; prothorax almost as long as wide, 

 the sides moderately converging, broadly, subevenly arcuate from base to 

 the gradually prolonged tubulation, which is truncate and fully half as wide 

 as the base; punctures minute and remote, gradually strong, close and 

 longitudinally rugulose laterally; basal lobe wanting, the edge simply feebly 

 and obtusely cuspidiform; scutellum well developed, quadrate, arcuate 

 behind, smooth and feebly concave; elytra one-half longer than wide, 

 distinctly wider than the prothorax and twice as long, elongate-parabolic, 

 but with somewhat obtuse apex, the humeri feebly prominent and rounded; 

 surface feebly undulated, the grooves deep and abrupt, not very coarse, 

 wider externally; intervals with single series of very small and inconspicuous 

 punctules; abdomen very convex, minutely, sparsely punctulate. Length 

 4.65 mm.; width 2.15 mm. Brazil (Santarem). One specimen. 



longula n. sp. 



Body not quite so elongate and with shorter and non-undulated elytra, similar 

 in coloration and lustre and with subsimilar scanty elytral vestiture, the 

 paler squamules basally not so large, numerous or evident; beak (9) not 

 quite so arcuate and rather more tapering from base to apex, subsimilarly 

 sculptured and a fourth longer than the head and prothorax; antennae 

 piceous, the second funicular joint relatively longer but not quite twice as 

 long as wide; prothorax slightly shorter than wide, the sides subparallel and 

 feebly arcuate in about basal, gradually rounding and converging in apical, 

 half, the gradually formed tubulation much shorter and less than half as 

 wide as the base; sculpture similar; basal lobe distinct, gradually formed, 

 with its apex narrowly sinuate at the middle; scutellum much smaller, 

 flat and exactly quadrate; elytra about a third longer than wide, more 

 rapidly parabolic, with less obtuse apex, only slightly wider than the pro- 

 thorax and but two-thirds longer; grooves nearly similar, the punctures of 

 the interstitial series rather more distinct; abdominal punctures much 

 coarser and closer. Length 3.8 mm.; width 1.75 mm. Brazil (Santarem). 

 A single female remota n. sp. 



There can be no doubt that the three preceding genera form a 

 well defined group, with a good many characters, such as elytral 

 vestiture, in common, but they are well distinguished among 

 themselves by special features, such as the broad flat prosternum 

 of Eudialomia, the shorter oval form and the basally inflated beak 

 of Stethobaropsis, and the more elongate, equally slender and arcuate 

 beak throughout, with differently formed body in Dialomia. Most 

 of them occur in the Amazon Valley, and they do not seem to 

 occur in the higher regions of Matto Grosso. It is rather beyond 

 doubt that Eudialomia remota should constitute a subgeneric group 



