482 Memoirs on the Coleoptera 



I can recall no other genus with which this can be closely com- 

 pared in any way. 



Zathanius n. gen. 



In this genus the body is rather ventricose, polished and with 

 sparse, erect setae, the beak thick, strongly compressed and coarsely 

 sculptured, thicker and more arcuate basally, somewhat tapering 

 distally, subsimilar in the sexes and separated by a deep reentrant 

 angle. Antennas subrriedian, the scape very moderate, the first 

 funicular joint as long as the next three, the others slightly trans- 

 verse, broadening but little, the club large, abrupt, oval, pubescent, 

 subequally divided by the sutures and as long as the five preceding 

 joints combined. Presternum with a shallow but sharply limited 

 parallel sulcus, the coxae narrowly separated, the intercoxal suture 

 deep, the posterior lobe very short and broadly rounded. Prothorax 

 sharply tubulate, the basal lobe very broad and rounded. Scu- 

 tellum free, transversely oval, sculptured, the elytra sharply and 

 strongly grooved, the surface smooth, not at all undulate. Pygid- 

 ium small, vertical, semicircular and prominently convex trans- 

 versely. First ventral suture fine but evident, angulate medially. 

 Legs moderately long, normal, the tibiae short, the tarsi narrow, 

 with small and slender, arcuate and widely free claws. The type is 

 as follows: 



Zathanius lyratus n. sp. — Stout, convex, polished, smooth and deep black 

 throughout, the upper surface sparsely bristling with short erect setae, remote 

 and in single lines on the elytra ; beak barely longer than the prothorax, strongly 

 arcuate, thick, strongly compressed and coarsely, closely punctate and rugose, 

 much more finely punctate and smoother beyond the antennas, which are black; 

 prothorax small, two-fifths (9) but scarcely a fifth (cf) wider than long, the 

 sides converging and subevenly, moderately arcuate, the tubulation half as wide 

 as the base ( 9 ), less (d"); punctures rather coarse and sparse, mingled with some 

 smaller, separated by nearly their widths at the sides, with a centrally broad 

 median smooth line; elytra a third longer than wide, obtusely oval, at the rather 

 prominent humeri a fourth to nearly third wider than the prothorax, fully twice 

 as long ( 9 ) or more (a*); grooves deep, very smooth, even, the intervals scarcely 

 twice as wide as the grooves, with single series of small but distinct, remote 

 punctures. Length 3.6-4.0 mm.; width 1.8-2.0 mm. Brazil (Chapada). March 

 and November. Eight specimens. 



Although possibly somewhat allied to the Pseudobarid series, this 

 genus cannot be associated closely, differing in habitus, in the beak 

 and especially in the slender tarsal claws, widely separated even 

 at base. 



Euzathanius n. gen. 



In general aspect of the body, in the prosternum, sculpture and 

 other features, this genus would seem to be rather closely allied to 

 the preceding, and yet the beak, antennae and undulated elytra are 



