106 NORTHERN TERRITORY TERMITI D^J-:, {., 



length as 2nd, hairy, swollen towards the apices; 7th-13th 

 longer, hairy, stalked; 14th shorter, elongate-oval. Prothorax 

 small, not as wide as head, much wider than long, rounded in 

 front and behind, anterior half bent-up in the middle, and 

 fringed with a few, long, reddish hairs; hind margin of pro-, 

 meso-, and metathorax similarly fringed. Abdomen small, 

 covered with stout, red hairs; cerci long, slender, hairy. Legs 

 short, moderately stout, with a few hairs; tibial spines small; 

 claws very small. 



Workei'. — Head brown above; rest of head and thorax pale 

 ochreous; legs much paler; abdomen whitish. Length, 4 mm. 

 Head slightly longer than wide, rounded behind, arcuate behind 

 the clypeus, a pale median suture dividing the head, and joining 

 another irregular one, which crosses the forehead well behind 

 the clypeus. Clypeus very large, broadly lobed, divided by a 

 median suture, a dark spot at either end, posterior lobe convex, 

 anterior lobe whitish, with a yellow mark on either side of the 

 middle, front margin slightly arcuate. Labrum large, convex, 

 nari'ow at the base, spreading out in the middle, rounded in front. 

 Jaws short, not as stout as in the winged form, but otherwise 

 similar. Antennae 15-jointed. Abdomen large; cerci slender, 

 with a few hairs. Legs short, stouf, with scattered reddish 

 hairs; tibial spines small; claws long. 



Further research will probably prove this to be a fairly com- 

 mon species in the locality from which the types and cotypes 

 were taken. Termitaria similar to those described below were 

 not infrequently noticed, but they were taken to be those of an 

 undetermined species of Eutermes. That there were two species 

 in the same locality, building outwardly similar termitaria, was 

 not discovered until recently. 



The termitarium from which the types were taken, measured 

 24 inches in height, by 16 inches in diameter at the base, with 

 sides tapered evenly to the bluntly pointed apex. The walls 

 were built of the same material as the interior, i.e., a composition 

 of triturated wood and fine particles of earth, and were not 

 separable from the inner portion. The outer part of the mass 

 was dense and nearly solid, but, towards the centre, it was 



