REVISION OF THE JAPANESE TERMITES. 



123 



behind the radius -sector. Mediana runs near cubitus, with some 

 fine branches directed toward the radius- sector, and branching 

 once or twice near the apex of wing. Cubitus runs through about 

 the middle of the wing, with 8-14 branches, of which the inner 

 4-6 thicker than the rest. — (Text-fig. 29, g). 



Hind wings. — Wing-stump almost equal in size to that of 

 the fore wings. Wing membrane slightly shorter. Mediana arises 

 from radius-sector just beyond the cross-suture. — (Text-fig. 29, h). 



Legs. — Stout, femur nearly twice as broad as the tibia ; tibia long, 

 with 2 spines at the terminal end ; tarsus slender, 4 -jointed ; 4th joint 

 large with claws. Hind legs not reaching the end of abdomen. 



Abdomen. — Very hairy. Elongate-oval, broadest in the middle, 

 with dorsum not very arched. Cerci conical, with a large base. 



Male : — The 8 th ventral plate of the abdomen much smaller. 

 Styli absent. 



Female : — The 6th ventral plate of the abdomen very large, 

 subsemilunar, nearly straight in front, rounded on sides and behind. 

 Styli absent. The lateral cuticle of the abdomen more thickly 

 covered with hairs than in the male. 



Measurements : — ■ 





Length (in m.m.) 



(Breadth in m.m.) 



Body 



7.0 — 9.0 





Body with wings 



15.0 —17.5 





Head 



1.37— 1.5 



1.45—1.6 



Antenna (16-joints) 



2.35 





Labrum 



0.46 



0.52—0.57 



Post-clypeus 



0.17— 0.2 



0.67—0.70 



