fUciterque striatis; irygidio trlnodoso', — Long. S^'g, lat. (prothoracis) 

 4 mill. 



Laos (Moaliot!). 



Clotlied witli a peciiliar substaiice , like 0. amhiguus , to which 

 species this also bears a resemblance in its facies. The clypeiis is a 

 little uneven, it has two obsciire longitudinal elevations at tlie vertex, 

 and is on eacli sido a little depressed between these and the eyes. 

 Thorax about one third broader than long, the front angles produced 

 and rounded, the bind angles indistinct; it bears some obtuse longi- 

 tudinal elevations which are not well dofined , they consist of two 

 central ones which approach one another in the middle so as to be 

 confluent, and on each side a lateral one which is abruptly bent out- 

 wards towards the front angles. The scutellum is narrow and similar 

 in form to that of 0. ambigtms. The elytra are finely striated; the Striae 

 being obscured by the. clothing, the 4th and 6th interstices are a little 

 elevated. The p3^gidium is rather large , quite perpendicular , it is 

 densely clothed and has three tubercular elevations. The bind tibiae 

 are slendor, their transverse carinae reduced to one or two tubercles 

 bearing setae, their apical spur short, only about half as long as the 

 first Joint of the tarsus. The antennae and palpi are yellowish red. 



This and the following species will proably form a distinct genus, 

 but as the limits of Onüicellus and allied genera are very dubious, 

 I have not ventured to characterize this at present. The dilated Joint 

 of the labial palpi meantime will help the recognition of these species. 



Onüicellus exsul (n. sp.): Indumento fusco dense obtedus ; clypeo 

 marginc anteriore hidentato dentihis approxmatis; prothorace antrorsum 

 levüer dihtato, i^uferfide inaequali; eh/tris phnis, mbtiliter simpliciterque 

 striatis; pygidio hasi biimpresso. — Long. 8, lat. (prothoracis) 4 mill. 



Slam (Mouhot!). 



This species resembles closely 0. falsus and has the last Joint 

 of the labial palpi similarly dilated. It is readily distinguished 

 however by the approximate teeth of the clypeus and the structure 

 of the bind legs , as also by some other slighter characters. The 

 hind tibiae are without any trace of carina and bear on the outer 

 side only a few very short and obscure setae; their tarsi are much 

 shorter thau those of 0. Jahns. 



