OBSERVATIONS ON SOME SOUTH AFRICAN TEEMITKS. 433 



Hoclotermes karrooensis sj). n. PL XXXIV, figs. 3, 3a; 

 PL XXXV, fig. 3. 



Soldier, 



Measm-ements. — Total length 15 to 19 mm.; head with 

 mandibles 7'5 to 8'5 mm. ; head- width 5"2 to o"5 mm. 



Head. — Vertex bright yellow or reddish-yellow, broadly 

 striped with diffuse copper-brown ; frons pale yellow-brown 

 with a conspicuous yellow triangular patch in the foi'k of 

 the Y-suture ; mediad of antennal fossse large diffuse patches 

 of yellow, and a triangular yellow patch caudad of base 

 of clypeus ; clypeus copper-brown. Surface polished ; vertex 

 and frons equally faintly wrinkled and equally clothed with 

 very scattered short hairs. Dorsal outline broadly oval and 

 noticeably wider than long; Y-suture distinct; sides broadly 

 curvate, in part almost straight and parallel ; trochantin of 

 mandible well expressed. 



Frons defiected and twice depressed ; depressions not 

 separated by a distinct ridge; caudal depression very faint, 

 level, merging into deflected cephalic depression ; presenting 

 two pits, and between them a median elevation which has the 

 form of a low triangular pyramid. 



Eyes black, sub-reniform, facing obliquely upwards. 

 Ocelli obsolete, indicated by shallow depressions centring 

 a small diffuse reddish spot. 



Clypeus oblong; cephalic margin (epistome) faintly incnr- 

 vate, thin and deflected anterior to a distinct transverse 

 ridge ; clypeo-frontal suture indicated by wrinkles connecting 

 frontal folds. 



Labrura bearing a strong resemblance to that of p re- 

 tor ien sis, but less acute, and sides less tapering ; more acute 

 than in transvaalensis. 



Mandibles reddish-yellow, apical points and teeth black ; 

 much coarser than in transvaalensis or pretoriensis ; 

 lateral margins irregularly curvate (wavy), more incurved 

 than in either transvaalensis or pretoriensis, especially 



