BY WALTER W. PROGGATT. 729 



rounded on the sides to the hind margin; flattened on the summit, 

 with the sides depressed, a median suture; legs robust; thighs 

 thick; tibiae slender, cylindrical, armed with two slender reddish 

 spines; terminal tarsal joint and the claws long, slender. Wings 

 long and narrow, rounded at the tips, four times as long as 

 broad ; scapular shield small, slender at the base, cross suture 

 rather convex, with four parallel nervures branching out of it; 

 costal and subcostal nervures stout, running parallel to each other 

 to the tip; median nervure very fine, rather irregular, running 

 through the upper half of the wing, unbranched ; submedian 

 nervure running through the middle of the wing, with fi^'e stout 

 oblique nervures, and from 6 to 8 slender ones; in some specimens 

 about half of them bifurcated. Abdomen slender, segments 

 rather long, rounded at the extremity; cerci short. 



Soldier. — Head light yellow, jaws dark ferruginous, black at 

 the tips, rest dull white. Length 2h lines. Head large, longer 

 than broad, rounded behind, concave on summit, sloping on the 

 sides and contracted at the base of the jaws; behind the clypeus 

 is a curious lobed marking of a lighter colour than the rest of the 

 head ; forehead projecting and hiding the clypeus ; antennae 

 springing from a cleft near the base of the jaws; 17-jointed; 

 labrum large, parallel on the sides but rounded at the tip; jaws 

 slender, untoothed, springing from the centre of the head, sabre- 

 shaped, straight to near the tips which curve inwards; when at 

 rest crossing over each other about the centre. Thorax like that 

 of winged insect; legs stout; tibiaj covered with short reddish 

 spines, as well as the two stout apical ones. Abdomen slender, 

 cylindrical, rovmded at tip; cerci slender. 



Woi'ker. — Head light brown; rest dull white. Length 2 lines. 

 Head almost spherical, convex on summit; forehead arcuate in 

 front; clypeus large; labrum rounded in front; jaws small, angular, 

 with five pointed teeth, 4 th largest, and 5th smallest. Abdomen 

 large, elongate-oval. 



Hah. — Mackay, Queensland (Mr. G. Turner). 



The specimens were taken from a small colony under a log, and 

 are the only examples of this curious species I have seen. 



