Endomychid Coleoptera of Indo-China. 335 
PARARHYMBUS, gen. nov. 
Corpus hemisphericum, supra pubescens. Pronotum toto circum- 
marginatum, basi medio lobato, foveis basalibus lineiformibus, 
ad medium attingentibus. Elytrorum epipleure latissime 
apicesque producti. Prosternum angustum, postice productum, 
acutum; mesosternum intra coxas quadratum, antice tuber- 
culatum ; metasternum antice rotundatum, fortiter marginatum. 
Pedes tenues, tarsis longibus, filiformibus, tri-articulatis. Horum 
articulus secundus quam primo brevior, tertius quam secundus 
duplo longior, Ungues graciles, basi fortiter lobati. Antenne 
longs, graciles, articulo primo crasso, 2° elongato, 3° ad 8° tenuis- 
simis, 9° ad 11° magnis, laxe articulatis. 
Pararhymbus longicornis, sp. n. 
Fusco-brunneus, capite, pronoti et elytrorum marginibus corporeque 
subtus rufescentibus, vel totus rufescens, pedibus antennisque 
flavis, harum articulo ultimo fusco; late hemisphzricus, modice 
convexus, supra sat dense griseo-pubescens, capite lato, parce 
punctulato et hirsuto, oculis sat magnis, parum grosse granulatis; 
pronoto parce et subtilissme punctulato, toto marginato, lateribus 
fortiter arcuatis, angulis anticis obtusis, posticis obsoletis, 
scutello minuto; elytris fortiter equaliter punctatis, basi quam 
pronoto multo latioribus, humeris obsoletis, lateribus regulariter 
arcuatis, apicibus productis. 
Long. 2°5 mm.; lat. max, 2 mm. 
Tonkin: Hoabinh (August). 
A series of specimens was found by M. Vitalis. 
This is an addition to the very insufficiently known group 
of forms allied to the genus Clemmus, in which the tarsi are 
filiform and consist of only three joints, apparently through 
the complete fusion of the Ist and 2nd. Pararhymbus 
differs from the latter genus by the less prominent and less 
coarsely granulated eyes, the very slender 11]-jointed antenne, 
of which all the joints except the penultimate -one are 
elongate, the absence of lateral prothoracic ridges due to the 
production of the basal fovez in Clemmus to the front margin, 
and the more broadly dilated elytra, with produced apical 
angles. 
The upper surface is clothed with a fine and not very close 
greyish pubescence, which is almost absent from the middle 
of the prothorax and the region of the scutellum. The 
elytra are everywhere strongly and regularly punctured. 
It is very deep brown in colour, with the lower surface, 
the front of the head, the legs, and antenne red, but the last 
