552 MR. W. F. KIRBY ON THE [DcC. 4, 



yellow stripe on each side ; postscutellura yellow ; metathorax with 

 a broad curved yellow stripe on each side. Abdomen with the first 

 segment yellow above, except in front, a black line interrupted 

 behind on the median line above ; second segment yellow above 

 except at the base, and on a wide conical space which extends to 

 three quarters of its length ; on the hinder edge of the segment the 

 yellow colour is continued on the lower surface, but does not form 

 a complete ring, being widely interrupted in the middle ; the third 

 segment bordered with yellow behind on the upper surface. Wings 

 dirty hyaline, smoky along the costa and in the radial cell. 



Allied to O. conjiuentus. Smith, from Sumatra, but differing much 

 in colour from any described species. 



No particulars of capture. 



Vespid^. 



POLISTES BALDER, Sp. n. 



Exp. al. 28 millim. ; long. corp. 13 millim. 



Ochreous yellow, with linear black markings. Head with a black 

 line just above the antennae, the ends of which run upwards on each 

 side and slightly diverge; below the antennse the clypeal suture is 

 black, and this curve is sometimes connected with the upper one by 

 a black line on each side within the antennae ; a black line crosses 

 the head just behind the ocelli, over which extends a continuous 

 black spot ; the tips of the mandibles are also black, as well as the 

 basal parts of the head and prothorax. Thorax with all the sutures 

 more or less black, sometimes not continuously; the central black 

 line is frequently incomplete behind. Pectus and pleura black, the 

 latter marked with four or five large and small yellow spots. Scu- 

 tellum, postscutellum, and metathorax yellow ; the sutures rather 

 broadly black ; groove of the metathorax black. Legs almost 

 entirely yellow or reddish yellow ; the trochanters and the extreme 

 tips of the coxae and bases of the femora black. Abdomen inclining 

 to reddish yellow, but with no distinct markings, except a black 

 spot above at the base of the 1st segment and the suture between 

 the 1st and 2nd segments, which is generally black. Wings smoky 

 hyaline, with brown nervures ; costal nervure and costal region 

 yellowish. 



Allied to P. hebrceus, but smaller and differently coloured. The 

 first segment of the abdomen, too, appears to be a little longer and 

 more gradually widened. 



Two nests accompanied these Wasps. They are round, and the 

 smaller one is considerably raised in the middle. The upper surface 

 is grey ; the outer portion is inky black towards the base, and 

 whitish on the sides above. 



One of the Wasps was taken on October 1 at Flying-Fish Cove ; 

 a nest, with eggs, larvae, and cocoons, was found on the underside 

 of a branch at the same place on October 2 ; and another nest, with 

 Wasps flying round it, on October 5. 



