8 BACCHISA NIGRIVENTRIS. 



tioned tufts the hairs gradually decrease in length towards 

 the antennary tubers. The antennae glossy at the basal 

 half, becoming opaque towards the tip, thinly covered 

 with rather long erect yellow hairs , especially on the un- 

 der surface. The scape a little longer than the 2nd and 

 3rd joint taken together, somewhat constricted in the 

 middle, its apical half thicker than the basal half; the 

 3rd, 4th and 5th joints slightly swollen at the top and 

 gradually decreasing in length ; the following joints cylin- 

 drical and of about equal length. 



The prothorax slightly constricted anteriorly and poste- 

 riorly ; the pronotum glossy , showing a few punctures and 

 some erect yellow hairs; before the hind margin there is 

 a transverse groove, which is provided with a transverse 

 ridge. The scutellum transverse, abruptly declivous at the 

 top which make it appears broadly truncate. 



The elytra parallel , rounded at the apex , covered with a 

 sericeous pubescence of the same color of the tegument, 

 and spread all over with erect yellow hairs; they are provi- 

 ded with punctures which are of a dark color at the bot- 

 tom and larger and deeper on the basal half; the impres- 

 sed line parallel with the suture shows similar punctures; 

 on each elytron a vestige of two longitudinal costae may 

 be observed. 



The under surface covered with a thin greyish pubes- 

 cence and some erect hairs , the legs with erect yellow 

 hairs. 



The specimen here described was among a small col- 

 lection of Coleoptera from the island of Sumbawa, pre- 

 sented to the Leyden Museum by his Excellence J. W. van 

 Lansberge. 



In the same collection there was also a female specimen 

 which differs from the above described male by its some- 

 what different coloration (the fulvous-yellow color being 

 clear yellow , the posterior fourth of the elytra black ,' the 

 antennae almost entirely black with only the extreme base 



Notes from the Leyden IMuseutxi , "Vol. III. 



