92 



HYMENOPTERA. 



Group 2. Social Wasps. 



Family 3. YESPID.E, Steph. 



This jrroiip is distinguished by the intermediate and posterior 

 tibiic having two spines at their apex, and by the claws of the 

 tarsi being simple. 



Vespariae, Jjatr. Hist. Nat. (1802). 

 Vespides, Leach, Eduib. Encijcl. (1812). 

 Vespida, Steph. Syst. Cat. (1829). 

 Vespina et Vespites, Newm. Ent. Mag. (1834). 



Genus 1. ISCIINOGASTER. 

 Ischnogaster, Gue'r. Voy. Coq. Ins. 269 (1838). 



1. Ischnogaster fllgipennis. 



Ischnogaster fulgipennis, Guer. Voy. Coq. Ins. 269, 



Sauss. Mon. Quepes Soc. 7.1; Ann. Soc. Ent. Fr. 2nd ser. 

 X. 23. 

 Stenogaster fulgipennis, Gue'r. Voy. Coq. Ins. t. 9. f. 9. 



Hab. New Guinea. 



2. Ischnogaster micans. B.M. 



Ischnogaster micans, Satiss. Ann. Soc. Ent. Fr, 2nd ser. x. 24 j 

 Mon. Giu-pes Soc. 8. 2. 



Hab. Java; Borneo (Sarawak). (Coll. A. Wallace.) 



3. Ischnogaster Mellyi. 



Ischnogaster Mellyi, Sauss. Ann. Soc. Ent. Fr. 2nd ser. x. 26. t.2. 

 f. 1 ; Mon. Gui'pes Soc. 9. 3. 



Hab. Java. 



4. Ischnogaster cilipennis. B.M. 



Male. Length 5i lines. — Black : the head smooth and shining; 

 the clypeus prolonged into an acute point at the apex ; the man- 

 dibles, organs of the mouth, extreme apex of the clypeus, the 

 scape in front, the flagellum beneath and its three apical joints 

 outside, of a jjak yellowish-white ; a broad yellow fascia on the 

 front, crossing at the emargination of the eyes, its upper margin 

 cur\'ed on each side, the curves meeting in front of the anterior 

 ocellus ; its lower margin irregularly notched. Thorax : the 

 lateral hiiuler margins of the prothorax have a narrow border of 

 yellow, which runs to the tegulae ; the anterior margin of the 



