BY G. F. HILL. 143 



than twice as wide as long, convex, posterior margin hemispherical, anterior 

 margin truncate. Anteelypeus large, hyaline, nearly straight in front. Labrum 

 small, about one-third longer than wide, narrow at the base, swollen on the sides 

 to the conical apex, exposing the two apical teeth of each mandible. Mandibles 

 very large, the teeth black, dentition of usual type. Antennae (Text-fig. 2) 16- 

 jointed, first joint very broad, second nearly cylindrical, a little more than half 

 as wide as first, third as long as second but much narrower, fourth a little shorter 

 and wider than third, fifth longer than third and shorter than fourth, sixth and 

 seventh equal, eighth to sixteenth about equal in length, narrower at base, tur- 

 binate at apex. 



Thorax (Text-fig. 3) : Pronotum nearly as wide as head, anterior margin 

 slightly bent up, behind which there is a deep depression on either side midway 

 between the pale median suture and lateral margin, antero-lateral areas rounded, 

 sides sloping to the slightly sinuate posterior margin, clothed as in head. Pos- 

 terior margin of meso- and metanotum more markedly sinuous than that of pro- 

 notum. 



Legs moderately long, very setaceous, claws and spurs slender, spurs 2 :2 :2. 



Wings : Wing-stumps short, equal, moderately densely clothed with short and 

 long setae, showing rudiment of subcosta, suture straight. Wings very long, 

 costa and radius vei-y distinct, the former more setaceous than the latter; median 

 vein dark at the base but soon becoming indistinct, with several branches beyond 

 the middle; cubitus with about 12 branches in the forewing and 10 in the hind- 

 wing, most of them well-defined and unbranched. . Membrane (Text-fig. 4) densely 

 clothed with minute setae and densely and minutely sculptured. 



Abdomen large, tergites narrow, clothed with long and short golden setae, 

 sternites yellowish, with greyish blotch at either end of the first six segments; 

 cerci very short and broad. 



Measurements : 



Length with wing: 2 23.00 mm., d 20.50. 



Length without wings : S 12.00, c? 10.50. 



Head: long 2.44; wide 1.97; deep 0.80. 



Antennae (16-jointed) 3.29. 



Pronotum : long 1.12 ; wide 1.88. 



Wings: forewings, long 19.00, wide 4.75; hindwings, long 18.00, wide 4.75. 



Tibia iii., long 2.29. 



Abdomen, wide 3.00 mm. 



Q Uie en, 



Total leng-th 33 mm., width of abdomen 7.9 mm. 

 Soldier. (Text-figs. 5-7.) 



Colour: Head very dark castaneous, distal two-thirds of snout, back of head 

 and an obscure dorso-median line lightest, proximal one-third of snout darkest 

 (in dried specimens from alcohol the head generally appears uniformly dark) ; 

 antennae nearly as dark as tip of snout, anterior half of pronotum as dark as 

 head, remainder of thorax and tergites of abdomen brown, the latter giving the 

 body a distinctly banded appearance. 



Head (Text-fig. 5 and 6) : Posterior part large, nearly round, snout nearly 

 as long as rest of head, clothed with scattered long reddish setae. Antennae 

 (Text-fig. 7) 14-jointed, long, third joint equal to, or a little longer than, second, 

 fourth always longer than tliird and fifth, fifth as long as third, sixth to four- 

 teenth elongate, slender. 



