EAST INDIAN TERMITES. 



557 



Length of body 



Length of head with mandible . . 

 Length of head without mandible 



4,oo mm. 



1,34 mm. 



1,94 mm. 



Width of head . . 

 Width of pronotum 

 Length of pronotum 



0,75 mm. 



0,41 mm. 



1,00 mm. 



Worker. — Head pale yellow; abdomen whitish. Head provided 

 with delicate hairs ; hairs on abdominal tergites longer and subequal. 



Fontanelle indistinct ; basal portion of clypeus short, slightly 

 swollen; antenna; 13-jointed, 2nd joint longer than 3rd; pronotum 

 rather smaller, anterior border considerably emarginate at middle, 

 posterior border rounded. 



Length of body 4,00 mm. 



Width of head 0,97 mm. 



Width of pronotum 0,66 mm. 



Habitat. — Balik-Papan, Dutch Borneo ; collected by Mr. Kane- 

 hira on April 20, 191 3. 



Remarks. — This species is closely related to Coptotermes travians 

 (Haviland). But in the soldier of C. borimisis the contraction in the 

 middle part of submentum is markedly stronger than in C. travians and 

 the antenna; are 14-jointed instead of being 13-jointed. With the 

 workers alone on hand, I have found it scarcely possible to draw a 

 fast line between the two species. 



Soldier and worker unknown. 



Imago. — Body yellowish brown ; clypeus, antennae, legs, and the 

 ventral side of abdomen straw-colored ; mandibles reddish brown, 

 apex darker ; wings hyaline, outer border yellowish. Head densely 

 provided with spiny hairs ; along the posterior border of abdominal 

 tergites two series of hairs, of which the anterior ones are the shorter. 



Head rounded ; fontanelle indistinct, dotted, slightly swollen ; 



4. Coptotermes menadoensis nov. sp. 



