226 PLATYXANTHA NIGRIPENNIS. 



There are now 4 specimens contained in the present 

 collection which I take to represent 2 males, from Banka 

 (v. d. Bossche), and 2 females, from Serdang (Hagen) ; in the 

 latter the thorax is more transverse, the abdomen as usual 

 dilated and the colour of the underside and legs variable , 

 either fulvous or black ; other structural differences I cannot 

 find ; should further material show that undoubted male 

 insects are without the tibial appendages and have normal 

 antennae but otherwise not differing from Platyxantha , as 

 is the case with the present species , it would perhaps 

 than be advisable for a better definition of Mr. Baly's 

 genus , to place these insects in another or new genus. 



Metrioidea Fairm. seems again to differ in having the 

 third joint of the antennae but little longer than the se- 

 cond , while here it is about 4 times as long. 



Metrioidea (?), Fairm. 



M. Fairmaire has founded this genus on a species from 

 the Fiji Islands ; the characters given by the author agree 

 so well with an insect contained in the present collection, 

 that I must refer it to this genus , which must be inclu- 

 ded in Chapuis' 26t'i group, the Platyxanthinae ; whether the 

 species described [here is rightly included in M. Fairmaire's 

 genus , I am unable to say , not having seen the type of 

 the latter. 



Metrioidea apicalis , n. sp. 



Oblong-ovate , black ; antennae testaceous , the basal and 

 apical joint piceous; thorax slightly broader than long, 

 with a few fine punctures; elytra dark brown, shining, 

 extremely finely geminate [punctate-striate. — Length 4 — 

 4^/2 lines. 



Head impunctate , shining , deeply transversely grooved 

 between the antennae; frontal tubercles strongly raised, 

 nearly contiguous; carina acute; clypeus transversely rai- 

 sed ; palpi swollen and dilated , the terminal joint short , 



]N'otes from tlae Leyden IMusewin, Vol. VI. 



