REVISION OF THE JAPANESE TEEMITES. 



109 



with fontanelle elevated. — (Text-fig, 26, a). 



Antennae. — Rather long, 19 -jointed, arising from a round 

 antennal cleft : 1st joint large, cylindrical ; 2nd shorter and narrower 

 than the 1st, but much longer than 3rd ; 3rd nearly as long as 

 broad, and subequal to 4th ; 6th longer than 5th which is the 



Text-fig. 26. Odontotermes {Cyclotermes) formosanus. Imago, a, 

 Head ; b, Antenna ; c, Labrum ; d, Eight mandible ; e, Left mandible ; 

 f, Pronotum; g, Fore wing; h, Hind wing, (a, fxl3; b— ex 20; g, hx2). 



shortest ; the rest turbinate, increasing in size and becoming more 

 stalked toward the extremity of antenna ; 19 th elongate -oval, 

 longer than the preceding ones. — {Text-fig. 26, b). 



Eyes. — Circular, moderately large, projecting on the sides. 



Ocelli. — Oval, distant from the eyes by one and a half of their 

 diameter, whitish in colour, slightly prominent. 



Labrum. — Linguiform, longer than broad, broadest at the base, 

 anterior border obscurely truncate. Anterior and middle portions 

 whitish, the remaining band -shaped portion yellow and sKghtly 

 chitinized. The surface lightly covered with hairs. — (Text-fig. 26, c). 



