BY WALTER W. FROGGATT. 747 



Mr. W. O. Mans])ridge, Warden at Hall's Creek, Kimberley 

 Goldfield, N.W. Australia, obtained the specimens from the nests, 

 and also sent me a photograph of one close to his house, with the 

 following information: — "These white ants are the common 

 species about this district, and build their nests on the slopes of 

 the- slate ridges. The}'- appear always to start them by swarming 

 over a clump of spinifex (Triodia) grass, which is about two 

 feet in height, and continue building their nests until they attain 

 a height of from six to eight feet." Mr. Mansbridge's photograph 

 shows an exceptionally tall nest, 14 feet in height, rounded at 

 the base, and of a uniform diameter, but contracting at the 

 summit into a rounded dome. He does not give me any informa- 

 tion about its internal structure, but judging from a somewhat 

 similar nest of Eutermes nearer the coast about Derby, King's 

 Sound, it is probably thickly coated with earthy matter on 

 the outer surface. 



Eutermes tumuli, n.sp. 



(Plate XXXV., fig. 9.) 



General colour of upper surface castaneous, of under surface 

 light brown; mouth-parts, legs, and antennae pale ochreous, wings 

 fuscous, nervures dark brown. The whole insect lightly covered 

 with fine hairs. Length to the tip of the wings 6 ; to the tip of 

 body 3 lines. 



Head broad between the eyes, coming in sharply on the sides, 

 from the antennal cleft to base of the jaws, convex on the summit, 

 sloping down on the forehead. Eyes very lai-ge, circular, and 

 projecting; ocelli large, reniform, in front of but contiguous to 

 the front margin of the eyes. Antennae 16-jointed, springing^ 

 from a deej) antennal cleft in front of the clypeus, 1st joint large, 

 broad at apex, 2nd smaller, 3rd smallest, 4th to 9th uniform in 

 size, broad and truncate at the extremities, 10th-15th more elon- 

 gate and stalked, 16th elongate-oval. Clypeus large, deeply- 

 arcuate behind, sloping on the sides, and truncate in front; labrum 

 broad, rounded in front, palpi long, hairy; jaws short and stout, 

 with two stout angular teeth at the apex, a much shorter angular 

 one below, and a lower hatchet-shaped edge. Prothorax large^ 



