DR. K. W. DAMMERMAN, ON A NEW SPECIES OF CALOTERMES. 99 



the medianus runs parallel with the radius and between 

 both are many cross veins. (PI. 3, fig. 1). 



On the posterior wings the radius and medianus are 

 partially coalesced, there are many cross veinlets between 

 them and the costalis. (PI. 3, fig. 2). 



Soldier. Length 10 — 12 mm, head with the mandibles 

 4 mm. Body yellow white, head chestnut brown, mandibles 

 black and brown on its base. 



The head is. big, oblong and rectangular, comparatively 

 thick and parallel sided, the front flattened towards the 

 mandibles (PI. 3, fig. 3). 



The mandibles are comparatively long, the right one with 

 two big teeth and a small one, the left with six small teeth. 



The eyes are small, round, light spots, situated above the 

 base of the antennae. The antennae have 15 joints, the 3rd 

 joint is more brown and bigger than the 2nd and 4th joint. 



The pronotum is a little more broad than the head, three 

 times as broad as long, the corners are roundish, the anterior 

 and posterior sides are a little bend inward. 



Legs short, posterior legs do not reach the end of the 

 body, tibiae with three thorns on the end just as the imago. 



Worker. Length 7 — 9 111M, body yellow white, head yellow. 

 Pronotum a little smaller than the head, thrice as broad as 

 long, anterior side a little concave. 



LIFE HISTORY. 



Till now this white ant has only been found on living 

 teak trees. It lives inside the stem at a height of 3 — 6 M ; 

 on this spot the stem is swollen and the bark cracked. On 

 the same tree one may find sometimes three or more 

 swellings above each other. If we slit the wood we find 

 several passages, which are partially covered with excrements 

 (PI. 4). The passages do not extend much further than 

 the swollen part of the stem. Sometimes the passages of two 

 swellings are connected, but they never run towards the 

 base of the tree. The passages communicate with the air 

 by narrow openings. 



In the beginning the holes are obviously made between 



