270 Memoirs on the Coleoptera 



Mandibles straight, non-decussate and not at all dentate within, their upper 

 surface somewhat ridged along the median line basally, their external outline 

 sinuate anteriorly, the apices obtusely lobed; body parallel and convex, 

 loosely squamose, the non-tubulate prothorax and elytra equal in width 

 presternum not sulcate, the coxae moderately separated; tarsal claws free. 



[Type C. rottmdicollis nov.] Chepagra 



Mandibles prominent when closed and non-decussate, but with their inner 

 margins more or less obviously dentate or basally notched; tarsal claws 



free and divergent 2 



Mandibles bifid and strongly decussate 6 



2 — Body abbreviated, oblong-oval, strongly convex, with fine and sparse vestiture 

 throughout; beak rather long and slender; presternum flat, with two short 

 erect processes in the male, the coxae moderately separated; prothorax very 

 briefly and feebly subtubulate; elytra coarsely grooved. [Type L. sub&qualis 



nov.] Lorena 



Body oval, rather closely, uniformly squamose, the habitus very much as in 

 Group VI of Centrinaspis; prosternum flat, similarly not spinose in the 

 male, the coxae moderately separated; prothorax not tubulate at apex, the 



elytra grooved. [Type P. subovalis nov.] Pycnonicentrus 



Body elongate-subparallel; prosternum not sulcate and never spinose in the 

 male, the claws free and divergent; antennae notably beyond the middle of 



the beak " 3 



3 — Prothorax never more than very slightly narrower than the elytra 4 



Prothorax very much narrower than the elytra and relatively small in size 5 



4 — Mandibles broad and rapidly narrowed, relatively short; body more convex 

 and sparsely uniformly, squamulose, the prothorax large in size. [Type 



E. nimius nov.] Eunicentrus 



Mandibles narrower and feebler, more elongate; body less convex, with relatively 

 smaller prothorax, the vestiture frequently not uniform; species very nu- 

 merous. [Type Centrimis decipiens Lee] Nicentrus 



5 — Body minute in size, the vestiture uniform. [Type M. angusticollis nov.] 



Nicentridia 



6 — -Tarsal claws free; femora unarmed as in the preceding genera 7 



Tarsal claws connate or extremely approximate 25 



7 — Prothorax with remarkable sculpture, opaque, the opacity due to extremely 

 minute, deep and very close, though perfectly defined, punctules; body 

 oblong-oval, very convex, with remote erect setiform squamules, the pro- 

 thorax not tubulate and the elytra moderately grooved; beak thick, strongly 

 sculptured, the antennae moderate; prosternum flat, the coxae moderately 



separated ; claws slender. [Type C. semiopacus nov.] Camerones 



Prothorax with the usual smooth ground surface between the punctures 8 



8 — Body briefly suboval and relatively rather stout as a rule 9 



Body narrower, elongate and subfusoid-oval; prosternum not armed in the 



male 12 



Body cylindric and parallel, very narrow to unusually broad in outline 15 



9 — Beak very short, thick, strongly arcuate above, nearly straight beneath, 

 separated from the head by a transverse sulcus; scrobes very oblique; body 

 rather depressed, the prothorax subquadrate and narrower than the deeply 

 grooved elytra, tubulate at apex; prosternum flat, not armed in the male, 

 the coxae widely separated; legs rather short. [Type F. brevinasus nov.] 



Fishonia 



Beak moderately long and of the usual form; elytra deeply grooved 10 



10 — Antennal club gradually formed, by reason of the gradual broadening of the 

 outer funicular joints; beak separated from the head by a moderate but 

 distinct transverse sulcus 11 



