39 



Oy^niioplcurus ahax (u. sp.) : Aenms, opavus, antennis flavis, 

 basi piceis; clypeo bidentato, prothorace parce ohsolete punctato, anguUs 

 posticis subrectis ; ehjtris subtiliter striatis, striis e punctis compositis. — 

 Long. 15 mill. 



Cambodia (Moubot!). 



Clypeus distinctly. bidontate in tbe middle. Tborax witb the sidos 

 ruunded and promiueiit in tbo middle, tbe base strongly sinuate near 

 tbo bind angles, so tbat eacb of tbese projects ahnust in form of a 

 rigbt angle , tbe surface is very finely coriaceou« , and bas also somc 

 sparing and very indistinct punctures. Elytra opaque, finely but 

 distinctly striatod. Tbe undcr surface is dull black; tbe tarsi are 

 pitcby red. 



Closely allied to G. siimatus, but of sborter form, and witb tbe 

 sculpture of tbe Upper surface nuicb fiuer. Tbe species is also clo- 

 sely allied to G. produdus, and tbe oiily important difference I see 

 in tbe two insects is tb*e sbape of tbe bind angles of tbe tborax. 



Sisyphus tJloracicus (n. sp.): Rufo-fuscus, protliorace linea late- 

 rali valde deflexa, anguUs anticis longius ciliatis; elytris minus profunde 

 mlcatifi, interstitiis angustis; femoribus vix cTmatis ; tibiis intermediis 

 intus dcntatis; pedibus posticis trochantcribus apice acutis, femoribus sub- 

 tus dente parvo acuto, tibiis extus obtuse angulatis. — Long. 5 mill. 



Singapore (Wallace!). 



Clypeus in front emarginate in tbe middle, on eacb side of tbe 

 emargination furnisbed witb a sligbt projecting tootb , and on eacb 

 side of tbis sligbtly bisinuate. Tborax viewed from above witb tbe 

 sides appearing almost straight, a little broader at tbo base tban in 

 front, just close to tbe front angles suddenly narrowed; seen from tbo 

 side, the side piece is noted to be large, and limited above by a fine 

 raised line wbich extends to near tbe front angles; tbe upper surface 

 of the tborax is covered witb coarse but very sligbtly impressed 

 punctures , from eacb of whicb Springs a ratber long curved stiff 

 liair, the ponctuatiou is not quite evenly distributed, so tbat au ob- 

 scure macLilated appearance is produced. Elytra witb Striae of very 

 broad obscure punctures, the intersticos a little convex ; obliquely im- 

 pressed near the extremity, sparingly setuloso. l'ygidium long and 

 narrow. Middle tibiao augulated on the inside above the middle. 

 Hiud legs witb the trochanters projecting at tbe extremity, whicb is 



