EE VISION OF THE JAPANESE TËKHITES. 



153 



short, conical, with, broad base. Styli absent. 

 Measurements :— 





Length (in m.m.) 



Breadth (in m.m.) 



Body 



4.5 —6.5 





Head 



2.0 —2.35 



1.0 —1.17 



Head with mandibles 



3.25—3.7 





Antenna (14- joints) 



1.9 —2.1 





Mandible (right) 



1.2 





Pronotum 



0.3 —0.33 



0.63—0.77 



Mesonotum 



0.23—0.3 



0.6 —0.63 



Metanotnm 



0.2 —0.23 



0.77—0-83 



Worker. 

 (Text-fig. 39). 



Colour. — Head pale yellowish, with a large white mark on 

 the forehead. Antennae and palpi pale yellow. Inner margin of 

 the mandible and a spot on each side of the clypeus brown. 

 Abdomen coloured by the intestinal contents. 



Head. — With scattered hairs. Slightly longer than broad, 

 rounded behind and convex on summit. Sutures indistinct. — (Text- 

 fig. 39, a). 



Antennae. — Much shorter than those of imago, arising from 

 a cleft just behind the base of the mandible, 14- jointed ; 4th joint 

 smallest.— (Text-fig. 39, b). 



Labrum. — Almost similar in form to that of imago. — (Text-fig. 

 39, c). 



