322 Mr. G. J. Arrow on the 



Amphisternus corallifer, Gerst, Found less commonly in 

 the same locality as the last. 



Amphisternus bel/icosus, Gerst., var. nov. lautinus. Nam 

 Mat, Upper Mekong. Tliis variety differs from the typical 

 form in the red-tipped elevation rising from the middle of 

 each elytron not being produced to a sharp point. A. bel/i- 

 cosus was originally recorded from Sumatra and Penang, 

 but it appears to be a rather wide-ranging species with 

 numerous local races, 



Amphisternus pustuhfer, Gorh. Xieiig Khouang. Only 

 the female of this has been described. The male has 

 much more slender antetniai and legs, the front tibia bearing 

 a very slight tooth in the middle of its inner face, and from 

 that point to the end being compressed and clothed internally 

 with close fine pubescence. The last ventral segment is 

 broadly emarginate. 



Knyonrus yrutus, Qoy\\. Luang Prabang : Paklay. Cam- 

 bodia : Kompong Kedth. Gorham gives the range of this 

 species as from Bengal to Tenasserim. 



Eiif/onius opimus, Gorh. Luang Prabang. Also found in 

 Burma. 



Enyonius siniilis, sp. n. 



Niger, vel nigro-violaceus, elytris utrinque maculis transverse sub- 

 ovutis duabus la)te flavis ornatis, prima post-humerali pauIo 

 obliqua fere ad raarginem externum attingeuti, secunda aute- 

 apicali breviori ; elongatus, pronoto modice transvereo, lateribue 

 antice couvergentibus, postice leviter divergeutibus, angulis 

 anticis promineutibus, posticis acutis ; elytris sat crebro et dis- 

 tiucto punctatis, modice convexis, oitus anguste marginatis, 

 lateribus hand fortiter arcuatis : 



(S , tibia antica medio fortiter spinosa, intermedia post medium 

 bene excisa, baud dentata, scgmento ultimo abdominali fortiter 

 baud late exciso. 



Long. 10-11 mm.; lat. max. 5 mm. 



SiaMj'Laos: Vientiane {R. Vitalis de Salvaza, June), 

 Pak Leung (/{. V. de Salvaza, Feb.). 



Engonius similis is closely similar to E. khtyi, Gerst., and 

 indeed almost identical iu colour and markings, but it is a 

 little more elongate, the prothorax less transverse, the elytra 



