510 CAEOLINE BURLING THOMPSON 



The enlarged adults of the first form 



The young dealated first-form individuals have a dark chest- 

 nut-brown head and thorax, and an abdomen with bands of hght 

 brown alternating with white, which bands become more marked 

 as the abdomen enlarges with age. The head is broadest between 

 the eyes, tapering forward to the clypeus; the frontal surface be- 

 tween the eyes and caudal to the brain bears a wide and shallow 

 depression, plainly seen in profile view of the head, made by the 

 sinking in of the cuticle above the large but non-functional fron- 

 tal gland, which, in this species, has no external opening or fonta- 

 nel. The compound eyes are black and large, 0.48 by 0.16 mm., 

 and sHghtly reniform. Just behind the suture of the clypeus and 

 nearly in line with the bases of the antennae are two light cres- 

 centic areas which, in the opinion of the writer, represent vestiges 

 of the two lateral ocelli, present in most other lower termites, 

 but not hitherto described in Termopsis. The view that these 

 are vestigial ocelli and not merely spots or flecks in the chitin is 

 based upon the study of dissections and sections of the head, 

 and upon the similar position of the ocelli in the related genera 

 Kalotermes and Hodotermes. In the latter genus, Jorschke ('14, 

 p. 219) describes, in a similar position, in the worker of Hodo- 

 termes vagans, two white spots or areas which he concludes are 

 rudimentary ocelli. 



The antennal segments are frequently broken at the tip, but 

 in some apparently uninjured specimens twenty-six segments 

 have been noted. 



The meso- and metathoracic segments are narrow from side to 

 side with a heavy median line and bear throughout Hfe the stubs, 

 'scales,' of the broken-off wings. 



The tibiae of all three pairs of legs bear lateral as well as ter- 

 minal spines, which are large and serrate. The lateral spines are 

 arranged on different tibial surfaces in the three pairs of legs, 

 always being found on the outer or anterior surface of the pro- 

 thoracic legs, on both outer and inner surfaces of the mesothoracic 

 legs, and on the inner surface of the metathoracic legs. The 

 number of spines is very variable, from five to one, and usually 



