REVISION OF THE JAPANESE TERMITES. 



29 



than 4th, but smaller than 3rd ; the rest turbinate ; the last 

 elongate- oval, rather small. — (Text-fig. 4, b). 



Eyes. — Kepresented 

 by a pale spot on each 

 side of the head, not pro- 

 minent. 



Labrum. — Subquad- 

 rate, with antero -lateral 

 corners broadly rounded, 

 nearly as broad as long. 

 The surface with nume- 

 rous bristles, of which a 

 pair near the anterior 

 margin very long. — (Text- 

 fig. 4, c). 



Ante-clypeus. — Short, 

 trapezoidal, with anterior 

 margin slightly concave 

 in the middle, and the posterior margin almost straight. 



Post-clypeus. — Short, quadrate, anterior margin truncate, with 

 a few hairs directed anteriorly, antero -lateral corners rounded, 

 posterior margin almost indistinguishable from the forehead. 



Mandibles. — Long, stout, with inner margin toothed and outer 

 one near the base concave. The right mandible 4-toothed : 1st 

 tooth very large with incurved pointed tip and an obscurely 5- 

 toothed edge ; 2nd with tip directed transversely ; 3rd flat and 

 broad ; 4th with an irregular edge. — (Text-fig. 4, d). The left 

 5 -toothed, but in reality 7 -toothed, the 3rd and 4th tooth being 

 two -tipped. — (Text- fig. 4, e). 



Pronotum. — More than twice as broad as long, broader than 



Text- fig. 4. Calotermes (Keotermes) koshunensis. 

 Soldier, a, Head ; b, Antenna ; c, Labrum ; d, Eight 

 mandible ; e, Left mandible ; f , Pronotum ; g, Leg. 

 (a, fx!3; b— e, gx20). 



