REVISION OF THE JAPANESE TERMITES. 151 



Soldier. 

 (PL IV. Fig. 30 ; Text-fig. 38). 



Colour. — Head yellow, brownish yellow or reddish brown, 

 deeply coloured in front. Antennas, labrum and mouth parts lighter 

 coloured. Ante-clypeus white. Mandibles reddish brown to black. 

 Thorax pale yellow or brownish. Abdomen from white to yellow. 



Head. — Lightly clothed with scattered hairs. Very large, 

 approximately cylindrical, with rounded posterior margin. Nearly 

 twice as long as broad, obliquely truncate on the forehead. Median 

 suture depressed, either dark brown or colorless, not reaching the 

 fontanelle. Fontanelle small, with opening. — (Text-fig. 38, a). 



Antennas. — 14- jointed : 1st joint very large, broadened distally ; 

 2nd cylindrical, almost half of the dimension of the 1st ; 3rd broadest 

 near the distal end, subequal to 2nd ; 4th the shortest ; 5th more 

 or less longer than 3rd ; 6th-8th very long ; the remainder gradually 

 diminishing in length toward the extremity ; 14th elongate- oval 

 rather longer than 13th. — (Text-fig. 38, b). 



Labrum. — Quadrate, nearly as long as broad, concave in front 

 and rounded on sides. Anterior corners produced into the pointed 

 spines. Anterior border with long and short bristles. — (Text-fig. 

 38, c). 



Ante-clypeus. — Larger than the post-clypeus, narrow at the 

 base and broader in front, anterior margin obliquely transverse. 



Post-clypeus. — Very small, indistinctly limited from the fore- 

 head. 



Mandibles. — Linear, bent. Eight mandible shorter and straight- 

 er than the left, with inner margin concave and outer one convex. 

 Tip acute and directed slightly outward. Left mandible darker 

 coloured than the right, with the basal third directed inward, the 



