250 PLATYRHOPALUS IRREGULARIS. 



flattened, smooth, sliiuiag, with slightly raised margins 

 and narrowly emargiuated in front. The antennae shining , 

 opaque along the under or front margin of the apical joint 

 of the club which , as well as the basal joint of the club , 

 is minutely punctured. The first joint of the antennae 

 square, somewhat longer than broad ; the club subdivided into 

 a short transverse reniform basal joint which is rounded at its 

 . front - and obtusely pointed at its hind margin , and into 

 a large apical joint, which is distinctly longer than broad, 

 broadly rounded at the top , strongly gibbous on both si- 

 des and has acute margins; along its upper or hind mar- 

 gin this joint is provided with three very distinct trans- 

 verse impressions which may perhaps be considered as 

 indicating a rudimental articulation ; its basal division some- 

 what protrudes at the hind margin where it turns upward. 



The pronotum slightly pubescent, almost without gloss, 

 shagreened , narrowed on the middle of its length where it 

 is provided with an impressed transverse line; the anterior 

 half somewhat broader than the head , rounded at the sides 

 and provided in front of the transverse line with a \V -shaped 

 impression; the posterior half of the prothorax narrower 

 than the anterior one, its sides subparallel widening out a 

 little towards the basal margin of the prothorax and pro- 

 vided with a longitudinal median impression. 



The elytra at the base broader than the anterior half 

 of the prothorax, deeply emargiuated between the shoul- 

 ders , shining , sparingly covered with almost imperceptible 

 raised punctures which bear a short hair and which are 

 more distinct on the inclined lateral portions. Pygidium , 

 under surface of the body and legs shining , slightly pu- 

 bescent and inconspicuously punctured. 



Hab. Bandong (Preanger-Districts, Java) (Bernelot Moons). 



This is the first species of the genus known as inhabi- 

 ting the Malayan Archipelago. 



Ley den Museum, September 1880. 



Notes froiTi llie I^eyden Miiiseum, A^'ol. II. 



