328 ^Ir. G. J. Arrow on a Cimirihution to the 



Heteronychus siihlievis, Fairni. 

 Bull. Soc. Ent. Belg., 35, 1801, p. 123. 



Niger, nitidus, ovahis, mpite ru<^oso, clypeo sat lato, medio 

 bidentato, fronte bitiiberculato, protliorace fere la»vi, lateribiis 

 arciiatis, antice jiaulo apjiroximatis, angulis aciitis ; scutello la-vi ; 

 elytris sat grosse striato-^nnictatis, linea suturali subobsolcta, lineis 4 

 discoidalibiis postice abbreviatis, 4 ]ateralil)iis integris punctisque 

 irregubiriltiis ; propygidii lineis stridulatoriis subtiliter sculpturatis, 

 sat distantibus ; pygidio minute et crebre piinctato, apice Itevi ; tibia 

 antica dentibus tribus acutis aliisfjne miniitis arniata. 



Long. 18'r)-22 mm. Lat. max. 9-5-13 mm. 



Uah. Assam ; Rangoon ; Malay Peninsula. 



Bliick or piccous, elongate, oval. Tlie head i.s coarsely 

 rugose with the front bituberculate, and rather broad at 

 the anterior margin, whicli bears two minute tubercles 

 placed near togetber. The pronoduu is almost im])er- 

 ceptibly punctured at the sides, witli tlie lateral margins 

 broadly curved and slightly narrowed anteriorly, the front 

 angles acute and the hind angles obtuse. The scutellum 

 is smooth. The elytra show a vestige of a punctured 

 sutural stria and four pairs of lines of strong punctures, 

 the first two pairs abbreviated behind. There are a few 

 similar punctures in the intervals and the lateral and 

 apical borders are strongly and irregularly punctured. 

 The propygidium is scarcely punctured and the stridulating 

 files rather distant and very finely sculptured. The 

 pygidium is finely and densely punctured except towards 

 the apex. The front tibiie are furnished ^vith three strong 

 acute teeth and supplementary denticles. 



^ . The front tarsus is slightly thickened and the inner 

 claw very broad, with a strong basal tooth. 



The species resembles II. jnwdolinentiis, Fairm., (of 

 Avhich I have been able, by M. Lesne's kindness, to 

 examine a co-type), but the marginal tubercles of the 

 clypeus are placed closer together, the pronotum is less 

 visibly punctured, the stridulating files are finer and 

 farther apart, and the pygidium is more finely and closely 

 punctured. 



The following new species is remarkable for its extreme 

 smoothness : — 



