Endomychid Coleoptera of Indo-China. 331 
anguste marginata. Prosternum postice productum, paulo de- 
planatum, apice truncatum. Mesosternum leyiter excavatum, 
antice angustatum, truncatum. Antenne parum graciles, articulo 
2° globoso, 3°-8° subzqualibus, perpaulo decrescentibus, 9°-11° 
intus leviter productis, transversis, ultimo truncato. Mandibula 
lata, apice minute fissa. Maxille lobus externus latus palpusque 
elongatus, acuminatus. Submentum fortiter transversim cari- 
natum; palpi labiales brevissimi, articulo ultimo late cupuli- 
formi. Maris antennarum articulus 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 has a 
superficial resemblance to Indalmus, but is easily distin- 
guished by the very differeutly 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 bimaculato, maculis sanguineis, 
obliquis, anteriori posthumerali, posteriori prope suturam paulo 
dilatato; oblongus, pronoto subtiliter punctato, lateribus antice 
arcuatis, angulis prominentibus, postice fere parallelis, angulis 
acutiusculis, marginibus incrassatis ; elytris ubique crebre haud 
fortiter punctatis, lateribus bene arcuatis, marginibus distincte 
reflexis : 
6, antennarum articulo 9° paulo inflato. 
Long. 6°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 obliquely inwards 
and backwards, the posterior one rather quadrate but pro- 
duced forward a little parallel with the suture. Itis a little 
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. 
