Mr. II. E. Andrewe* on Oriental Carabidae. 299 



flat and depressed near base, dark spot less clearly defined, 

 front femora dentate. 



W. Sarawak, Mount Matang, 2000', 23.U4 (G. E. Bryant), 

 1 ex. in my collection, 



Eustka. 



1 (2). Size 6 mm., labrum 10-setose, front 



margin of prothorax deeply exca- 

 vated E. bryanti m. 



2 (1). Size2 , o-3 , 0mm.,labruin8-setose,front 



of prothorax emarginate. 



3 (4). Side border of prothorax without den- 



ticulations, front angles very sharp 



and acute E. plagiata, Schm. Goeb. 



4 (3). Side borders of prothorax evidently 



denticulate, front angles sharp, but 

 less acute, very slightly rounded at 

 tip. 



5 (6). Size 3 - mm., prothorax strongly trans- 



verse, side margin widely reflex ed, 



border finely denticulate E. japonica, Bates. 



6 (5). Size 2*5 mm., prothorax moderately 



transverse, side margin narrowly re- 

 flexed, border more strongly denti- 

 culate E. matanga m. 



Eustra matanga, sp. n. 



Length 2*5 mm. ; width TO mm. 



Testaceous ; apex of antennas a little darker, head red- 

 brown, a large ill-defined discal spot on each elytron iufuscate. 



Head (0'6 mm. wide) smooth, shiny, convex, moderately 

 constricted at some little distance behind eyes, some fine 

 ridges on each side close to eye, one of which is continued 

 round the eye behind ; antennas clavate, moniliform, pubes- 

 cent, reaching middle of body. 



Prothorax transverse, as wide as head, widest at a third 

 from apex, base truncate but oblique near hind angles, much 

 narrower than apex, which is emarginate, sides rounded in 

 front, sinuate before hind angles and rather widely reflexed, 

 border with 8 to 10 small teeth, which are well marked 

 towards base ; front angles porrect, acute ; hind angles re- 

 flexed, slightly obtuse ; transverse impressions and basal 

 foveas fairly deep, median line reaching base and forming a 

 shallow fovea where it meets front transverse impression, 

 but not extending to apex ; surface smooth, shiny, a little 

 uneven along base. 



Elytra convex, three times as long as prothorax, base 

 emarginate, shoulders prominent: side border reflexed, very 

 obliquely truncate at apex, with a slight re-entrant angle, a 



