MR. G. D. HATILAND OX TERMITES. 375 



castaneous, strong, with incurved tips, the margin of the right 

 with two short broad teeth, that of the left with two or three 

 smaller teeth. Grula more than half as long as the head, but 

 united to it only near the base. Lateral cervical sclerites about 

 a quarter as long as the head. Pronotum sKghtly broader than 

 the head, quadrilateral, with very concave anterior margin. The 

 9th, 10th, and often the 8th dorsal plate of the abdomen are 

 latericious in colour. 



Worker 6 mm. long, slender. 



Hah. Sarawak. Type, No. 235. 



CaLOTERMES DENTATU3, n. Sp. 



Female 4'5 mm. long. Ocellus in contact with the eye. 

 Antennae of 11 segments. Pronotum reniform. Wing 4'3 mm. 

 long, 1*1 mm. broad ; costal area narrow, not nerved, the mediau 

 contiguous to the subcostal throughout its length. Legs not 

 reaching to the end of the abdomen. Ventral plate of the 7th 

 abdominal segment nearly as broad as long. 



Soldier 5 mm. long. Head 1-4 mm. long, "9 mm. broad, 

 bright testaceous, anteriorly obliquely truncate, the truncated 

 surface slightly concave. Antennae of 10 segments, the 2nd 

 longer than the 3rd. Labrum reaching to two-thirds the length 

 of the mandibles. Mandibles -6 mm. long ; tips black, incurved, 

 the middle of the cutting- margin of each mandible with a single 

 tooth directed transversely. Grula narrow, broad in the apical 

 third. Pronotum as broad as the head ; anterior margin deeply 

 concave, the lateral margins converging posteriorly. Hind legs 

 reaching to the 7th abdominal segment. 



Worker 6 mm. long, slender, cylindrical. 



Hah. Sarawak. Type, No. 355. 



Calotermes brevicaudatus, n. sp. 



Male 4*5 mm. long, badious above, paler below. Head 1 mm. 

 broad. Ocellus in contact with the eye. Antennae of 13 seg- 

 ments, the 2nd scarcely longer than the 3rd. Pronotum slightly 

 narrower than the head, with pale f-shaped mark. Wing 6 mm. 

 Ion", 1*7 mm. broad, the costal area narrow and not nerved ; 

 the median contiguous to the subcostal through its whole length. 

 Hind legs exceeding the short abdomen. 



Pemale with the ventral plate of the 7th segment semilunar. 



Soldier varying in size, from 7 mm. to 5 mm. long. Head 



28* 



