234 MEMOIRS OF THE CARNEGIE MUSEUM 



11. Front tarsi 2-jomted, the front and hind femora stout and more or less compressed ; eyes very small 



or wanting Ceratosolens Mayr. 



12. Front tarsi 2- to 5-jointed, not reposing in a sulcus at the tip of the front tibise 13 



Front tarsi 1-jointed, reposing in a sulcus at the tip of the front tibise ; claws small, almost straight. 



Legs four, the middle pair aborted ; antennae 3-jointed, compressed ; head and thorax subquadrate. 



Tetrapus Mayr. 



13. The usually large antennal fovea terminates posteriorly in a narrow or broad longitudinal slit ; if it 



does not, then the transverse oval antennal fovea does not extend to the middle of the head 14 



14. Body somewhat narrow ; antennae 3- to 6-jointed. 



Front tarsi 2 or 3-jointed 16 



Front tarsi 5-jointed. 



Thorax in outline trapezoidal ; antennae 6-jointed, with 3 ring-joints. 



Pleistodontes Saunders. 



Thorax not so shaped, either bell-shaped or ellipsoidal, antennae 3- to 6-jointed 15 



15. Thorax not oblong, in outline either ellipsoidal or bell-shaped ; antennae 3- to 6-jointed. 



Thorax ellipsoidal, slightly contracted at the sides before the middle ; antennae 6-jointed, with 



with one ring-joint and a 2-jointed club Kradibia Saunders. 



Thorax bell-shaped; antennae 3- or 4-jointed, with one ring-joint Eupristina Saunders. 



16. Head about twice as long as wide ; front tarsi 2-jointed ; antennae 6-jointed Ceratosolens Mayr. 



Head not or scarcely longer than wide, at the most not more than one and one half times as long as 



wide ; front tarsi 3-jointed ; antennae 3-jointed. 



Head a little wider than long ; tarsi of hind legs very long, more than twice longer than their 



tibiae Blastophaga Gravenhorst. 



Head usually a little longer than wide, never wider than long ; tarsi of hind legs short, not or 

 only a little longer than tibise Eisenia Ashmead, gen. nov. 



Subfamily II. Sycophagin^. 

 1883. Cynipidse, Division II., Aploastomata, Saunders, Trans. Ent. Soc. London, 

 1883, p. 20. 



This group was first correctly separated by Sir Sidney Saunders, who designated 

 it as Division II., Aploastomata, in the family Cynipidse. It has, however, nothing 

 to do with the Cynipidse, but forms a natural group of the genuine fig-insects. At 

 present no species is known outside of the Asiatic and African faunae. 



The females belonging to the group are distinguished from those in the previous 

 subfamily principally by the absence of mandibular appendages. The head, how- 

 ever, is also somewhat differently shaped, being flatter, with a broader frontal sul- 

 cus and no hook -like tubercle on the middle of the occiput, while the abdomen 

 is more depressed and the ventral valve is not prominent. 



The males are more easily recognized, being quite different from those in the 

 Agaoninse and the wingless males in the Torymidse. The head is very long and 

 narrow, while the abdomen is long, sessile, and gradually broadened towards apex, 

 each lateral apical angle being furnished with a tubercle, or a long, thread-like organ. 



