EAST INDIAN TERMITES. 



573 



Length of head without mandible 



Width of head 



Width of pronotum 



1,72-1,88 mm. 

 r,50-i,66 mm. 



1,00-1,13 mm. 



Length of pronotum 0,59-0,72 mm. 



Worker (the larger form). — Head yellow, abdomen whitish. Head 

 sparingly provided with spiny hairs ; abdominal tergites with a series 

 of spiny hairs along the posterior border. 



Head round ; fontanelle indistinct ; basal portion of clypeus 

 markedly swollen ; antennœ 17-jointed, 2nd joint slightly longer than 

 3rd ; anterior border of pronotum two-lobed, slightly elevated. 



Length of body 4,50 mm. 



Width of head 1,47 mm. 



Width of pronotum 0,84 mm. 



Worker (the smaller form). — Antennae 17-jointed, 2nd joint as long 

 as 3rd and 4th taken together ; anterior border of pronotum slightly 

 concave at middle. 



Length of body 4,00 mm. 



Width of head 1,00 mm. 



Width of pronotum 0,69 mm. 



Habitat. — Maros, Celebes (April 25, 191 3) ; Menado, Celebes 

 (May 19, 191 3); Talisay Island (date unknown); all collected by Mr. 

 Kanehira. 



Remarks. — In the present species, the soldiers vary greatly in 

 the dimensions of head. But as there exist intermediate forms 

 between extreme forms, it is impossible to draw a fast line to dis- 

 tinguish them into two castes. 



