Longicornia Mulayana. 337 



Serixin marginata. 



S. Iiitescens, piibe cinerascente tecta ; lateribus protlioracis et 

 elytrorum nigris, horum apicibus vix mucronatis. 



Huh. — Batch ian. 



Luteous, with a thin pale ashy nearly opake pubescence ; head 

 and prothorax impunctate, the latter with the pubescence of a yel- 

 lowish hue, the sides with a black stripe ; elytra subseriate-punc- 

 tate anteriorly, the punctures remote, the sides bordered with 

 black, the very slight mucro at the apex of each nearly concealed 

 by the pubescence ; body beneath and legs luteous, with an ex- 

 iremely delicate silvery pubescence, only seen in certain lights ; 

 antennae more than half as long again as the body, black. 



Length 5 lines. 



Serixia aurulenta. 



S. capite prothoraceque lutescentibus, pube subtili tectis ; 

 elytris fuscescentibus, pube sericea subaurea dense indutis, 

 apicibus breviter mucronatis. 



Hab. — Sarawak. 



Head and prothorax luteous, finely pubescent, impunctate, the 

 latter with the pubescence silky, shining, golden-yellow or very 

 pale grey in certain lights ; elytra brownish, gradually broader 

 posteriorly, the pubescence golden-greyish, closer and coarser 

 than on the prothorax, the punctures even at the base nearly 

 hidden by it, the apices very shortly mucronate ; body beneath 

 and legs luteous, with a delicate greyish pubescence; antennae 

 nearly twice as long as the body, black. 



Length 5 lines. 



Serixia optahills. 

 S. prothorace pube ochraceo-argentea dense tecto ; elytris 

 parallelis, pube brevissima grisescente, postice densiove, 

 apicibus modice mucronatis. 

 Hab, — Ceram. 



Head brownish-red, sparingly pubescent, impunctate ; pro- 

 thorax densely clothed with an ochraceous silky pubescence, with 

 about half-a-dozen punctures on each side near the base ; scu- 

 tellum transverse, slightly bilobed at the apex ; elytra with the 

 sides parallel, finely seriate-punctate, pubescence very short, 

 yellowish-grey, thin at the base, gradually denser posteriorly, 

 the apices slightly mucronate ; body beneath and legs luteous, 



VOL. III. THIRD SERIES, PART IV. JUNE, 1867. Z 



