4 68 Coleopterological Notices, IV. 



Beak separated from the head hy an extremely feehle transverse impression, 

 which is foveate in the middle ; scutellum small, rounded, emarginating 



the thoracic lobe ; body subglabrous and broadly oval Pacliybaris 



22 — Anterior coxae narrowly separated ; mandibles with the outer edge evenly 

 and feebly arcuate, not denticulate. 

 Prothorax not tubulate at apex. 



Metasternum very short, the intermediate and posterior coxse separated 

 by a distance which is much less than the length of the post-coxal por- 

 tion of the first ventral segment Microcliolus 



Metasternum much longer ; body narrower, convex, oblong-oval, densely 



squamose, the scutellum conspicuously so ..JVicentrus 



Prothorax strongly constricted behind the apex, the latter tubulate ; meta- 

 sternum long Centrinites 



Anterior coxae widely separated ; mandibles more or less dentate externally, 

 particularly near the base. 

 Pygidium oblique, completely concealed in both sexes, or with the mere 



apex exposed Ca la 11 drill lis 



Pygidium fully exposed, unusually large, vertical, convex and very con- 

 spicuous in the male, but oblique and practically entirely concealed in 



the female Centrinogyna 



23 — Elytral striae normal, always distinct, not foveate at base 24 



Elytral striae almost completely obsolete, each terminating at base in a deep, 



posteriorly attenuate fovea ..27 



24 — Third tarsal joint dilated and bilobed ; body without erect bristles 25 



Third tarsal joint slender, obconical, not in the least dilated ; body with erect 



bristles 26 



25 — Metasternum long, much more than one-half as long as the met-episterna; 

 prosternum with or without corniform processes in the male, widely or 

 narrowly separating the coxae, generally flat, but sometimes deeply ex- 

 cavated in the male, or otherwise modified Limiiobaris 



Metasternum shorter, about one-half as long as the met-episterna ; body more 



broadly oval and convex ; prosternum never armed in the male. 



Antennal club small or moderate ; prosternum flat or broadly impressed, 



sometimes more deeply excavated anteriorly ; vestiture very sparse but 



distinct. 



Prothorax broadly constricted anteriorly but not tubulate ; prosternum 



flat, not impressed, not excavated anteriorly but with a fine deep and 



even transverse constriction OligolocllllS 



Prothorax tubulate ; prosternum broadly impressed, deeply excavated 



anteriorly Ill iosl i III Pis 



Antennal club very large, elongate ; prosternum narrowly and deeply sul- 

 cate along the middle ; body almost completely glabrous, polished, the 



setae extremely minute throughout Stetliobaris 



26 — Body minute, the bristles very long and conspicuous Zaglyptlis 



27 — Body oval, very convex, subglabrous, the prothorax very strongly tubu- 

 late Oomorpliidius 



