COLLECTED IN liOBNEO, ETC. 113 



Group SOCIAL WASPS. 



Fam. VESPIDJE. 



Gen. IsCHNOOASTER, Guerin. 



1 . Ischnogaster cilipennis. Smith, Cat. Hym. pt. v. 

 Hab. Borneo (Sarawak). Malacca (Mount Ophir). 



2. Ischnogaster Mellyi,^^w«. Soc. Ent. Fr. 2« ser. x. p. 25. pi. 2. f. 1. 

 Hub. Malacca. Sarawak. 



3. Ischnogaster nigrifrons. /. niger, subtus flavo-variegatus, 

 cellulis primo secundoque submarginalibus aequis, tertia breviori et ad 

 cellulam marginalem angustata. 



Female. Length 6 lines. Black : the face and clypeus covered with 

 pale golden pubescence, the colour changing in different lights ; the 

 clypeus produced at its apex into an acute spine ; the scape in front, 

 the flagellum beneath, the palpi and mandibles, yellow, the latter ferru- 

 ginous at their apex. Thorax globose ; the posterior margin of the 

 prothorax, two oblique lines on the mesothorax anteriorly, a spot on 

 each side of the scutellum, the post-scutellum, and two spots at the 

 apex of the metathorax close to the insertion of the petiole, yellow ; 

 beneath, fusco-ferruginous ; the legs rufo-piceous, with the knees and 

 the anterior and intermediate tibiae outside, yellow. Abdomen ob- 

 scurely rufo-fuscous ; the first segment petiolated; beneath, with two 

 lines at the base of the node of the petiole ; the extreme lateral mar- 

 gins of the first segment, two oblique ones towards its apex beneath, 

 an ovate spot on each side of the two following segments beneath, 

 and the extreme lateral basal margin of the second segment above, 

 yellow. 



Hab. Borneo (Sarawak). 



4. Ischnogaster micans, Sauss. Mon. Guepes, Soc. p. 8. 

 Hab. Borneo (Sarawak). Malacca. 



Gen. PoLiSTES, Latr. ^ 



Polistes Sagittarius, Sauss. Mon. Guepes, Soc. p. 56. 



Hab. Borneo (Sarawak). India. China. Greece. 



There is probably no species of this genus which is so widely distributed 

 as the present ; the specimens which I have seen from Borneo are all 

 smaller than the Indian ones, and are more highly coloured; the 

 mesothorax has a central longitudinal ferruginou^s stripe, and the me- 

 tathorax two longitudinal ones. 



Gen. PoLYBTA, Sauss. 



1. Polybia Sumatrensis, Sauss. Suppl. Guepes, Soc. 

 Hab. Sumatra. Borneo (Sarawak). Malacca. 



