OBSERVxVTIONS ON SOME SOUTH AFRICAN TERMITES. 487 



A closely allied but distinct species, making' similar but 

 quite subten'anean nests, is common to the Pretoria district, 

 Transvaal. 



Eutermes bilobatus [Haviland). PI. XXXIV, %. 19. 

 Termes bilobatus Kav., Jonrn. Limi. Soc, Lond., xxvi, p. 411, 1898. 



Soldier. 



Measurements, — Total length 6"5 to 7*5 mm.; head with 

 mandibles 3 to 3*5 mm. ; head-width 1'3 to 1*5 mm. 



Head. — Vertex pale, translucent, brownish -yellow ; frons 

 paler. Viewed from above short U-shaped, somewhat longer 

 than wide ; Y-suture distinct; sides almost parallel ; tapering- 

 very faintly to mandibles ; cephalo-dorsal margin curvate. 

 Viewed from the side the head is seen to be short and thick, 

 the caudal end convex, the frontal area swollen and capistrate; 

 below the capistrum the cephalic face is hollowed; a little 

 beneath the hood is a thick group of short spines which 

 surround the aperture of a gland. E3^e-spots and ocelli 

 absent. 



Clypeus short. 



Labrum (so-called) pallid; strongly forked ; stem of fork 

 flattened; arms pointed somewhat acutely, sloping upwards ; 

 extending to nearly half the length of the mandibles. The 

 true labrum is probably atrophied, represented by a thin 

 plate superior to a forked, chitinised epipharynx. 



Mandibles long, flat, equal, straight, slender, tapering, 

 points slightly incurved ; lateral margins not widening 

 greatly at base ; inner margins boldly shouldered at base ; 

 cutting margins minutely serratulate. Left mandible with a 

 blade-like jagged process on proximal third, which is broadest 

 towards its base ; basal process large, salient, conical ; distal 

 margin of basal process at right angles to cutting mai'gin and 

 lower margin parallel with long axis of mandible. Right 

 mandible with an acute process like a reversed rose thorn 

 on pi'oximal third ; base like that of left but without process. 



