86 Mr. G. J. Arrow on the Genus llliysodes. 



elevato lato, ud loboruui medium non attingente, supra oculos 

 carina Lnevi : prothorace antice semicirculariter arcuato, lateribus 

 curvatis, postice paulo contractis, supra scqualitcr quadri-costato ; 

 elytris striatis, striis valde et conflucntor punctatis, luimeris 

 promiuentibus : prosterno impunctato, opipleuris prothoracicalibua 

 irrcgulariter punctatis, corporis reliquo subtus grosse punctato, 

 tibiis aiiticia apice quadri-spinosis. 



cJ , femoribus aiiticis medio dentatis ; tibiis posticis apice lamella 

 spinosa aruiatis. 



Long. 7'5 mm. 



/lab. Peiian;^. 



The typical specimens, of both sexes, were found hy 

 Mr. Lauib. The insect very closely resembles R. nicohar- 

 ensis, Grouv., in which, however, the two outer costiB of tiie 

 thorax are much narrower than the two inner ones. The 

 punctures of tiie elytra also readily distinguish the two 

 species, those of the latter having so completely coalesced 

 longitudinally as to be nowhere entirely distinct. 



R. alerrimus, Clievr., wiiich is described from the same 

 region, has, if tlie very loose description can be relied upon 

 at all, a very differently formed head to that of the present 

 species. 



Rhysodes hatchianus^ sp. n. 



Niger, nitidus, parum elongatus, capitis lobis fortiter emarginatis, 

 antice paululo convergent ibus, spatio mediano postice valdo dila- 

 tato, fere ad loborum medium attingente, supra oculos carina la;vi ; 

 thoracis lateribus leviter curvatis, postice perpaulum contractis, 

 dorso subaequaliter quadri-costato, costis intcrnis medio valde dila- 

 tatis ; elytiis conjunctim in latitudine ad thoracem aequalibus, 

 fortiter striato-punctatis ; corpore subtus grosse punctato, pro- 

 sterno epipleurisque prothoracicalibua impunctatis, metasterno 

 medio excavato. 



Long. 7"5 mm. 



Ilah. Batchian. 



I do not know the male of this species, but its distinctive 

 characters are no doubt the same as in the preceding one, to 

 which R. batchianus is closely allied. It is much less attenu- 

 ated, however, and the two inner costse of the prothorax are 

 thicker in the middle. Similarly, the two outer costse are 

 thicker than the corresponding parts of R nicobarensis. 



Rhysodes malabaricus, up. n. 



Niger, nitidus, capitelongitudine ad latitudinem ajquali, lobis promi- 

 nentibus, extus paulo planatis, vertice fere ciiculariter perforato, 



