REVISION OF THE JAPANESE TERMITES. 



15 



Head. — Oval, a little longer than broad, smooth and shining, 

 lightly clothed with a few scattered hairs. Sutures obscure. 

 Summit flattened, slightly concave in the centre and sloping down 

 toward the forehead. Sides converging slightly anteriorly. Edges 

 of the antennal clefts much prominent. — (Text-fig. 1, a). 



Antennae. — Long, 23 — 25- jointed. In the specimen with 25 

 joints : 1st joint large, cylindrical, broadest at the apex, almost 

 without hair ; 2nd 

 a little longer than 

 3rd, which is 

 shorter than 4th ; 

 5th subequal to 

 4th in size ; about 

 six following ones 

 increasing a little 

 in size, but those 

 beyond becoming 

 more slender to- 

 ward the extremi- 

 ty ; terminal one 

 elongate - oval. — 

 (Text-fig. 1, b). 



Labrum. — 

 Almost hexagonal, 

 with rounded cor- 

 ners. Anterior 

 margin slightly 



m, Text-ficr. 1. Hodotermopsis japonicus. Soldier, a, 



concave. The an- „ . . , , , . ■ , ,,. . . --, . a T , f 



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

 terior half is mandible ; f, Labium ; g, Right maxilla ; h, Pronotum, i, 



Mesonotum; j, metanotum; k, Third leg; 1, Terminal 

 Clothed with many abdominal segments from below, (a— 1x10). 



