1901.] lITMElSrOPTEK-V OP THE " SKEAT EXPEDITIOX." 29 



and shining, thickly covered with longish silvery hair ; on the 

 mesonotum the hair has a golden tinge. The basal half of the 

 median segment has a wide shallow fnrrow, which becomes 

 gradually wider towards the apex ; the furrow on the apical slope 

 is wide on the basal two-thirds, much nari'ower and shallower on 

 the apical. Legs testaceous : the four front femora are more 

 rufous in colour ; the posterior darker hi tint and are lined with 

 black on the inner and outer sides : the apex of the hinder tibise and 

 the hinder tarsi black. Abdomen ferruginous ; the petiole, except 

 at its apex, black. 



Comes nearest, apparently, to T. coloratum Smith. The legs 

 probably vary in tint; the hinder coxse are black at the base 

 behind. The pleurae have a plumbeous tint. There are curved 

 lateral furrows on the base of the median segment, but they are 

 not deep or very distinct.] 



V E s P I D jE. 



Vespa cincta Fab. 



Biserat. The common Indian form, not the Malayan var. 

 affinis. In most of the workers the rufous colour of the abdomen 

 extends on to the basal segment. 



PoLiSTES sagittaeius Sauss. 



One specimen of this common species from Biserat. 



ICAEIA LEPTOGASa?EK, Sp. n, 



Plava, capite supra, mesonoto medioque pronoti nigris ; alls 

 hyalinis, nervis stigmateque testaceis. $ . 



Long. 14-15 mm. 



Hah. Patalung, Malay Peninsula. 



$ . Antennae dark rufous ; the scape darker in colour. On the 

 head the vertex, the front (except near the eyes and immediately 

 above the antennae), and the part below the antennae and above 

 the clypeus, and bordered on the outer side by the sutures, are 

 black ; there is an obscure line down the clypeus, which does not 

 extend quite to the apex. The mandibular teeth are black. Meso- 

 notum black. On the apex of the scutellum is a triangular black 

 mark : its central furrow is deep, and does not extend to the base. 

 The furrow on the median segment is narrow at the base ; the rest 

 of it is much wider, with the sides obliquely sloped ; the centre 

 has a narrow keel. Legs coloured like the body ; the apices of the 

 four posterior tibiae and their tarsi black. Abdomen elongate, 

 without black ; the petiole is nearly as long as the 2nd and 3rd 

 segments united. 



This is a larger species than S. sulciscutis ; the femora want 

 entirely the black colour so conspicuous in the last-named species ; 

 the abdomen is distinctly longer compared with the thorax, and 

 the rest of the abdomen is clearly longer compared with the 

 petiole ; the second segment itself is longer compared with its 

 width at the apex. 



