REVISION OF THE JAPANESE TEEMITES. 135 



Post-clypeus. — Very short, much shorter than the half of its 

 breadth, not strongly distended, with anterior margin concave, and 

 posterior margin convex. Median suture visible. 



Mandibles. — Broad and short. Eight mandible 4-toothed : 1st 

 tooth with incurved acute tip ; 2nd subequel to the 1st in size, 

 but the tip not incurved ; 3rd small ; 4th with edge finely serrate. — 

 (Text-fig. 33, d). Left mandible also 4-toothed : 1st tooth with 

 slightly incurved pointed tip ; 2nd nearly as long as the 1st ; 

 3rd small ; 4th broad, with edge finely serrate. — (Text-fig. 

 33, e). 



Pronotum. — Hair dense. Narrower than the head, nearly twice 

 as broad as long, with broadly rounded anterior corners, lateral 

 margins converging posteriorly, posterior margin slightly emarginated 

 in the middle. Anterior border slightly raised and the median line 

 fairly distinct.— (Text-fig. 33, f). 



Mesonotum. — Longer than pronotum, almost straight in front 

 and broadly notched behind. 



Metanotum. — Almost similar to mesonotum in shape, but 

 somewhat shorter and less broadly notched behind. 



Fore wings. — Wing-stump triangular, with cross-suture reaching 

 the basal § of the mesonotum. Wing membrane about three times 

 as long as broad, pretty hairy toward the apex. Eadius absent. 

 Eadius-sector very thick, almost without branches. Mediana with 

 1, 2 or 3 apical branches. Cubitus with 10-14 branches, of which 

 about the 6 innermost are thickened. — (Text-fig. 33, g). 



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

 in size and shape. Membrane almost as that of fore wings but 

 somewhat shorter. Mediana arises from radius-sector. — (Text-fig. 

 33, h). 



Legs. — Rather slender, all tibiae with 2 terminal spines. 



