198 Memoirs on the Coleoptera 



mandibles are straight within, though biemarginate, and are 

 prominent and non-decussate when closed. The antennae are sub- 

 medial, the first funicular joint about as long as the next two, the 

 others gradually broader and rather compact, the oval club gradual 

 in formation and as long as the preceding four joints. The pro- 

 sternum is flat, fossulate anteriorly and separates the coxae by fully 

 their own width. The femora are barely inflated, the claw-joint 

 long and the claws notably long, arcuate, free and divergent. The 

 prothorax is abruptly tubulate at apex and the scutellum small, 

 smooth, subquadrate and wider than long. The type may be 

 described as follows: 



Dericinus habilis n. sp. — Body somewhat rhombic-oval, and convex, smooth, 

 polished and but slightly sculptured; beak as long as the head and prothorax, 

 rather more bent medially, feebly tapering; antennae not very slender and of 

 only moderate length, piceous; prothorax a third wider than long, the converging 

 sides very feebly arcuate, rounding apically to the truncate tubulation, which is 

 half as wide as the base; surface with extremely minute, remote punctulation, 

 becoming gradually strong though well separated punctures at the sides; basal 

 lobe small but rapidly formed and with truncate apex; elytra a fourth longer 

 than wide, parabolic, distinctly wider than the prothorax and very nearly twice 

 as long, the humeri somewhat prominent, rounded; grooves very abrupt, deep 

 and smooth, a third as wide as the flat intervals or less, the latter each with a 

 single series of very remote and minute punctures, each bearing a minute and 

 very slender brown squamule; punctures beneath coarse, well separated, those 

 of the notably convex abdomen rather small and sparse. Length 3.6 mm.; 

 width 1.8 mm. Brazil (Santarem). A single specimen, of undetermined sex. 



This species can be recognized readily by the short thick beak, 

 with prominent mandibles, subglabrous, polished black integuments 

 and other characters as detailed above. 



Ortycus Pasc. 



What appears to be this genus is represented in my collection 

 by a single remarkable species. The body is stout, rhombic-oval, 

 very convex, clothed with long slender fulvous scales, very irregular 

 in arrangement and replaced beneath, except on the prothorax, by 

 minute slender whitish squamules. The beak is short, thick, feebly 

 arcuate and rapidly tapering, not separated from the head by a 

 distinct impression and is strongly sculptured, the mandibles prom- 

 inent when closed and non-decussate, the inner margins subdentate 

 or strongly crenulate, somewhat as in Centrinites. The antennae 

 are medial, rather short and compact, the first funicular joint 

 longer than the next two, the club well developed, oval, somewhat 

 abrupt and with very deep sutures. The prosternum is broadly, 

 evenly concave along the middle, the coxae well separated. The 

 femora are mutic as usual in this part of the tribe and feebly 

 inflated, the deeply fluted tibiae rather strongly arcuate at base, 



