collected in the ha.deamaut, south aeabia. 291 

 Cerambtcid^. 



48. PLOCiEDERTJS MELANCHOLICUS, GaJian, YBiT. 



This variety occurs also iu Somali-land. It differs from the 

 typical West-African form in the darker coloration of the elytra, 

 "whicli are almost black, and in having the third joint of the 

 antennae armed with a short spine or tootli at theinner distalangle. 

 Thie variety very much resembles P. denticornis^ Fab. ; but in 

 the latter the third antennal joint has a rather long, sbarp, and 

 very distinct spine at the inner distal angle, and the succeeding 

 joints of the antennae are also mucb more distinctly spined tban 

 in the present variety. 



49. CoPTOPS FUSCA, Oliv. 



Halticid^. 



50. PoLTCLADA Benti, sp. n. 



Capite testaceo ; antennis pectinatis, nigris, articulo prime 

 testaceo ; protborace flavo-testaceo, supra maculis sex nigris- 

 duabus antice, quatuor in serie arcuata ad basin; elytris dense 

 punctatis, nigris, utrisque maculis septem flavo-testaceis ; corpore 

 subtus testaceo, metapleuris, femorum apicibus, tibiis tarsisque 

 nigris. Long. 11 mm. 



Head almost entirely reddish testaceous in colour; somewhat 

 finely and closely aciculate-punctate above. Prothorax pale 

 testaceous, marked above with six black spots, of which two are 

 close to the anterior margin, while the remaining four are 

 arranged in an arcuately transverse series close alongside the 

 basal margin. Elytra black, thickly punctured ; each with seven 

 pale yellowish testaceous spots, one at the base close to the 

 scutellum, one below and behind the shoulder, two placed trans- 

 versely at the middle, two between the middle and apex, also 

 placed transversely and united by a narrow tract ; the seventh, 

 somewhat more rounded, placed close up to the apex, from 

 which it is separated only by a very narrow black border ; epi- 

 pleure of each elytron pale testaceous except along the apical 

 margin. Body underneath testaceous, with the sides of the 

 breast blackish ; tibiae, tarsi, and the apices of the femora also 

 black. Antennae of the male almost as strongly pectinated as in 

 JP.pectinicornis, Oliv., black, with the first joint testaceous. 



