84 NORTHERN TERRITORY TERMITID^., i., 



clypeus pale yellow; labrum pale ferruginous. Length to tip of 

 body 4 J mm.; to tip of wings 10 mm. Head large, longer than 

 broad, rounded behind; forehead prominent, flattened, divided 

 from the posterior part of the head by a wide, curved suture 

 passing in front of the eyes and extending back to a point in 

 line with the posterior margin of the eyes, a small circular ex- 

 crescence in the centre of the head in line with the posterior 

 margin of the eyes; clypeus large, arcuate behind, slightly 

 rounded on the sides, truncate in front, a deep suture dividing 

 it into two lobes, the posterior one convex and divided in 

 the middle line by an indistinct suture ; labrum long, convex, 

 widest at the base, sloping in to the truncate apex, not reach- 

 ing the tip of the jaws; eyes small, circular, coarsely faceted, 

 projecting, placed on the sides of the head, equidistant from the 

 apex of the labrum and the hind margin of the head; ocelli 

 wanting. Antennae very short, 16-jointed, springing from a 

 circular cleft in front of the eyes, ] st joint longest; Snd half the 

 length, slender; 3rd very small; 3rd-10th coalesced; llth-13th 

 moniliform; 14th-16th hairy. Thorax covered with scattered 

 hairs; prothorax moderately large, not as wide as head, not as 

 long as broad, rugose on the summit, depressed at the sides, front 

 margin turned up, notched in the centre, sides and hind margin 

 rounded, with a slight indentation behind. Wings long (fore- 

 wings 9 mm., hind wings 8|mm.), narrow (2 mm.), fragile, rounded 

 at the tips. Forewing : costal nervure slender, paler than the 

 rest; subcostal nervure stout, running close to the costal and 

 merging into it before the middle; median stout at the base but 

 rapidly becoming slender, curving downwards near the base 

 below the middle line of the wing, then rising above the middle, 

 two simple, slender, oblique nervures branching from it, the first 

 about the middle, and both joining the hind margin well round 

 from the apex, bifurcating at about two-thirds of its length from 

 the base, the lower branch joining the hind margin well round 

 from the apex, the upper branch again forked near the apex, the 

 anterior branch joining the costal margin, the posterior the hind 

 margin at points equidistant from the apex; submedian nervure 

 stout at the base, slender towards the extremity, running through 



