Endomychid Coleoptera of Indo- China. 323 



less convex, less rounded at the sides, and with much loss 

 distinct lateral margins. The club of the antenna also is 

 rather narrower. 



In the male the tooth of the front tibia is strong, the 

 middle tibia is excised at its inner edgi', but witliout a 

 distinct tooth at the upper limit of the excised part, and the 

 terminal segment of the abdomen is less broadly bilobed 

 than in E. klugi. 



Engonius opacicullis, sp. n. 



Niger, opacus, elytris seueo-nigris, nitidis, singulo fasciis duabus 

 pollide liavis ornato, fasciis irregularibus, angustis, autoriori 

 posthumerali, fere ad margiuem externum attiiigenti, posteriori 

 subapicali ; obloiigiis, convexus, pronoto sat lato, subtilitcr 

 punctato, medio longitiidiualiter sulcato, lateribus medio paulo 

 dilatatis, antice et postice leviter convergent ibus, angulis anticis 

 productis, obtusissimis, posticis fere rectis ; el) tris ubique 

 crebre punctatis, autennanim articulo tertio quam quarto baud 

 duplo longiori, tibiis 4 anterioribus valde arcuatis : 



(S , tibia anl ica apice intus excisa, femoribus et tibiis posticis 

 intus longe ciliatis, segmenti ventralis ultimi spatio mediauo 

 quadrato abrupte elevato et utrinque carinato. 



Long. U mm. ; lat. max. 5 mm. 



Xieng Khouang (May, December). 



Nearly related to E. siyniftr, Gorh., and with almost the 

 same elytral pattern, the two irregular transverse bars being 

 merely a little narrower. It ditfers most markedly from 

 that species in the opaque pronotum, which is also very 

 much more finely and sparingly punctured and proportion- 

 ally broader, with the front angles still more produced and 

 blunt. The distinctive features of the male are as in E. 

 si(/ni/er,h\it the elevated plate upon the last ventral segment 

 is larger and more quadrate. In both species there is also a 

 pair of minute accessory tubercles at the posterior margin 

 of the preceding segment. 



Enyonius brevipes, sp. n. 



Niger, nitidus, singulo elytro fasciis duabus transvcrsis rufis 

 ornato, auteriori post-hunierali, fere ad marginem extennim 

 attingenti, medio constricta, posteriori anteapicali angusta, un- 

 dulata ; oblongiis, modice convexus, pronoto lato, nitidissinio, 

 medio baud sulcato, antice subtilissime punctulato, lateribus 

 postice rectis, fere i)arallelis, antice roguluriter arcuutis, angulis 

 anticis obtusis, posticis fere rectis, foveis basalibus fori iter 

 imprcssia, fere ad medium attingentibuni ; elytris ubiquo crebre 



