Brazilian Barin/E 197 



prothorax; grooves deep, punctate, a third or more as wide as the flat inter- 

 vals, which have single loose series of moderate but very distinct punctures. 

 Length 2.0-2.35 mm.; width 0.95-1.25 mm. Brazil (Santarem). Two 



specimens— apparently female evanescens n. sp. 



Body' not so small, oblong-oval, moderately convex above, strongly so beneath, 

 deep black, moderately shining; beak very slender, strongly and evenly 

 arcuate, two-thirds as long as the body and feebly tapering, finely, sparsely 

 punctate, the antenna? less posterior, barely visibly behind the middle, 

 obscure testaceous and shorter than in the preceding; prothorax two-fifths 

 wider than long, the strongly and subevenly arcuate sides becoming parallel 

 or even somewhat convergent at base, the moderate and gradual tubulation 

 not half as wide as the base; punctures, except laterally, minute and sparse 

 throughout, the white loose squamules evenly distributed at the sides; basal 

 lobe very short and broadly rounded; scutellum larger, flat, glabrous; elytra 

 obtusely oval, a fourth longer than wide, slightly wider than the prothorax 

 and evidently less than twice as long; grooves a third or fourth as wide as 

 the flat intervals, having loosely confused and moderate punctures, bearing 

 slender white squamules in single or partially double rows, and becoming 

 obscure in a large region before the middle of each; under surface with the 

 close-set punctures, bearing very fine and separated white squamules, be- 

 coming larger and dense on the met-episterna and mes-epimera; presternum 

 as usual, nearlv flat, finely fossate apically. Length 3.0 mm.; width 1.5 mm. 

 Brazil (Santarem). One example, apparently female tenuirostns n. sp. 



The species named tenairostris does not, strictly speaking, belong 

 with the others above described, though connected in some ways 

 through evanescens. The mandibles are more strongly dentate, 

 the anterior coxse much more widely separated, in fact by more 

 than their own width, the antenna- are more medially inserted and 

 the funicular joints, after the similarly elongate first joint, are 

 shorter, the seventh evidently transverse, the club subsimilar. 

 The scutellum is larger, more transverse and arcuate behind and 

 the basal lobe of the prothorax shorter and very broadly rounded. 

 The interstitial punctures of the elytra are confused and there is no 

 trace of the characteristic median chevron of loose white squamules. 

 The lateral sculpture of the pronotum is also altogether different, 

 consisting of oblique ruguliform punctures, bearing evenly distrib- 

 uted subtransverse squamules in about lateral fourth. Tenm- 

 rostris, therefore, constitutes a well denned subgeneric group of 

 Parasaldius for which I would suggest the name Parasaldidia (n. 

 subgen.). 



Dericinus n. gen. 



The general appearance of the unique type of this genus is very 

 different from any of those with which it is associated taxonomically, 

 the body being glabrous and polished, each of the moderately 

 strong punctures of the under surface having a minute slender 

 whitish squamule. The beak is rather short, thick and distinctly 

 arcuate, strongly compressed, coarsely punctured and longitudinally 

 furrowed and separated from the head by a deep sulcus. The 



