Endomychid Cohoptera of Indo- China, 331 



anguste marginata. Prosternum postico producluni, paulo de- 

 l)laiiatum, apice truncatum. Mososternum leviter excavatum, 

 aiitice angustatum, truncatum. AntoniiPD parum graciles, articulo 

 2" globoso, 'S^-S" suba)qualibus, perpaulo dccresccntibus, O"-!!" 

 intus leviter productis, transvorsis, ultimo truncate. Mandibula 

 lata, apicG minute fissa. Maxilloc lobus externus latus palpusque 

 elongatus, acuminatus. Submentum fortiter transversim cari- 

 natura ; palpi labiales brevissirai, articulo ultimo late cupuli- 

 formi. Maris antennarum articulu3 9 quam 10 major. 



This genus forms an interesting link between Mycetina 

 and the apparently very dissimilar Danae, to which it is 

 evidently related by the peculiar male character mentioned 

 above, viz. the enlarged 9th joint of the antenna. It lias a 

 superficial resemblance to Indalmits, but is easily distin- 

 guished by the very differently formed antenna, with its 

 strongly asymmetrical club and non-elongate third joint. 

 Its nearest relationship is with Mycetina, from which it 

 differs in the shape of the mesosternum as well as the sexual 

 feature referred to. 



Pseudindalmus tonkinensis, sp. n. 



Niger, sat nitidus, utroque elytro biraaculato, maculis sanguineis, 

 obliquis, anterior! posthumerali, posteriori prope suturam paulo 

 dilatato ; oblongus, pronoto subtiliter punctato, lateribue antice 

 arcuatis, angulis prominentibus, postice fere parallelis, angulis 

 acutiusculis, marginibus incrassatis ; elytris ubique crebre baud 

 fortiter punctatia, lateribus bene arcuatis, marginibus distincto 

 reflexis : 



J , antennarum articulo 9° paulo inflato. 



Long. G'5 mm. ; lat, max. 3*5 mm. 



Tonkin (June) : Upper Mekong R., Muong Sing (April). 



This is entirely black above and beneath, except the four 

 blood-red elytral spots, which are of rather more irregular 

 shape than in the previous species, the anterior one just 

 touching the humeral angle and produced oblicjuely inwards 

 and backwards, the posterior one rather quadrate but pro- 

 duced forward a little parallel with the suture. It is a liftle 

 larger than a second species, which I propose to describe 

 under the name of P. andamanicus, with the elytra more 

 distinctly dilated and margined at the sides, less shining, and 

 rather less strongly but fairly closely punctured. 



In the male the ninth joint of the antenna is distinctly 

 larger than the tenth or eleventh. 



