REVISION OF THE JAPANESE TERMITES. 35 



or border white, with one row of several bristles. — (Text-fig. 6, c). 



Ante- clypeus.— Trapezoidal, narrow in front, white in colour. 



Post-clypens. — Smaller than the ante-clypeus, separated indis- 

 tinctly from the forehead. Anterior margin nearly straight with a 

 few bristles directed anteriorly. 



Mandibles. — The right mandible 4 -toothed : apical two teeth 

 acute ; 3rd flat with long edge ; 4th flat, with edge finely 

 serrate.— (Text-fig. 6, d). The left one also 4 -toothed : 1st tooth 

 long, with slightly incurved tip ; 2nd a little broader ; 3rd trian- 

 gular, with tip directed transversely ; the basal one with irregular 

 convex edge. — (Text-fig. 6, e). 



Pronotum. — Broader than long, subscmilunar, with concave 

 anterior margin and rounded antero -lateral corners. All margins 

 are covered with long and short hairs. — (Text- fig. 6, f). 



Mesonotum. — Narrower and longer than the pronotum, with 

 slightly concave anterior and more concave posterior margin. The 

 anterior half of the longitudinal suture coloured dark brown. 



Metanotum. — Nearly equal in shape to the mesonotum, but 

 slightly shorter. 



Fore wings. — Wing- stump large, triangular, covering over the 

 basal portion of the hind wings. Wing membrane minutely punct- 

 ate. Subcosta very short, sometimes obscure. Eadius also short, 

 joining the costa. Eadius- sector thick, runs nearer the mediana than 

 the costa. Mediana nearly as thick as the radius -sector, runs 

 parallel to the latter and reaches the apex of the wing, near which 

 it gives a faint branch. Cubitus very faint, reaches near the apex 

 of the wing and has about 10 branches, of which the basal 3 or 

 4 distinct, the rest very faint. — (Text-fig. 6, g). 



Hind wings. — Wing-stump much smaller than that of the 

 fore wings, cross- suture straight. Wing membrane slightly smaller 



