REVISION OF THE JAPANESE TERMITES. 



103 



and on lateral corners, and converging posteriorly on sides. 

 Several hairs on the surface. — (Text-fig. 25, c). 



Clypens. — Trapezoidal, more than twice as broad as long, 

 almost truncate in front, and 

 slightly convex behind. It is 

 scarcely possible to distinguish 

 the ante- from the post- 

 clypeus. 



Pronotum. — Nearly twice 

 as broad as long, slightly bilob- 

 ed both in front and behind. 

 Posterior corners more strongly 

 rounded than the anterior 

 ones.— (Text-fig. 25, f). 



Mesonotum. — Broader than 

 the pronotum, concave in 

 front, sides diverging posteriorly, and convex behind. 



Metanotuim — Almost like the mesonotum, but much broader. 



Legs. — Hairy, slender. Hind legs not reaching the end of 

 abdomen. 



Abdomen. — Elongate-oval, thickly clothed with fine hairs. Cerci 

 small. Styli conical, with a few hairs, of which the terminal one 

 much longer. 



Measurements : — 



Text-fig. 25. Coptotermes formosanus. 

 Worker, a, Head ; b, Antenna ; c, Labium ; 

 d, Eight mandible ; e, Left mandible ; f, Pro- 

 notum. (a, f x 20 ; b— e x 33). 





Length (in m.m.) 



Breadth (in m.m.) 



Body 



3.0 —5.5 





Head 



1.13—1.3 



1.13—1.3 



Antenna (16-joints) 



1.9 





