BY G. F. HILL. 99 



Labrum large, convex, broad at the base, spade-shaped at the 

 apex, not reaching the tip of the stout jaws. Prothorax saddle- 

 shaped, truncate and slightly raised in front, rounded behind, 

 divided in the middle line by a narrow suture; on the summit, 

 an irregular raised area one-half the width of the prothorax, with 

 depressed centre. Scapular shield hairy, showing the base of 

 four main nervures very distinctly; cross-suture nearly trans- 

 verse. Abdomen long, cylindrical, bluntly rounded at the end; 

 chitinous plates hairy; cerci indistinct. 



Soldier. — Head dark ochreous; antennae ochreous, with the 

 base and apex of each segment white; jaws dark castaneous; rest 

 of insect whitish. Length, 3J mm., exclusive of jaws; jaws 1 mm. 

 Head a little longer than broad, bluntly rounded behind, sides 

 straight to the base of a sharp projection from an irregular, 

 roughened protuberance below the antennal cleft, truncate in 

 front, with the forehead produced into a long, hairy, cone-shaped 

 projection bearing a smaller projection on either side at the base, 

 directed slightly upwards, and extending as far forward as the 

 apex of the labrum. Clypeus indistinct. Labrum long, with the 

 nearly straight sides produced into a point at either side, the 

 front margin between the points slightly convex, scattered 

 reddish hairs on the upper anterior portion. [In one of the 

 co-types the labrum is slightly contracted on the sides, and 

 truncate in front.] Antennae hairy, 14-jointed, springing from 

 slightly raised tubercles in front of the head, and below the two 

 smaller projections of the forehead; first joint long, stout, nearly 

 cylindrical; 2nd less than one-half the length, slender; 3rd and 

 4th smallest; 5th-13th long, slightly turbinate; 14th longer than 

 than 13th, elongate-oval. Jaws very long, longer than head, 

 slender, curved, springing from the centre of the head, tips 

 flattened on one side and sharply curved downwards, with a 

 large blunt fang at the base of the left jaw, opposed to an 

 irregular bluntened projection on the right. Prothorax small, 

 about one-half the width of the head, divided in the middle line 

 by an indistinct suture, the middle of the apical half turned up 

 nearly at right angles like a collar, front margin rounded, notched 

 in the middle, hind margin rounded. Abdomen elongate-oval, 



