BT G. P. HILL. 



153 



produced in the middle. La,brum narrow at the base, as wide as postelypeus 

 in the middle, rounded in front and just reaching the apex of the mandibles. 

 Antennae (Text-flg. 22) 16-jointed, the first .joint large, longest of all, second 

 half as long as first and much narrower, third as long as second, a little naj-rower 

 at the apex and much narrower at the base, fourth shortest of all, fifth notice- 

 ably longer than third, sixth and seventh, the remaining joints not exceeding 

 the fifth in lengih. 



Thorax: Pronotum (Text-flg. 21) small, a little narrower than head, not 

 notched, but slightly concave and bent up in front; antero-lateral areas rounded, 

 sides sloping to the narrowed and slightly sinuate posterior margin, clothed as 

 in head and wing-stumps. Meso- and raetanotum (Text-fig. 23) with posterior 

 margin deeply emarginate. 



Legs short, moderately stout and setaceous, claws long and slender, spurs 

 2:2:2. 



Text-figs. 21-27. EuUermes yarrabahensis Mjoberg. 

 21-24. Imago. — 21. Head and pronotum: 22. Antenna, proximal segments: 23. 



Meso- and metanotum, posterior margin: 24. Wing-membrane. 

 25-27. Soldier.— 25. Head in profile: 26- Head, dprsal surface: 27. Antenna, 



proximal segments- 



Wings : Wing-stumps small, equal, clothed with long and short setae, suture 

 straight; costa and radius very distinct at the base but soon becoming obscure, 

 with three or four branches beyond the middle ; cubitus with nine or ten branches, 

 the first six only very distinct. Wing-membrane (Text-fig. 24) minutely and 

 densely sculptured, clothed densely with minute setae. 



Abdomen large, clothed as in pronotum; eerei short and stout. 



Measurements : 



Length with wings: c? 16.00 mm., 5 18.50; without wings: c? 8.00, S 10.50. 



Head: wide 1.60—1.69; long 1.88—2.00; deep 0.70. 



Antennae (16-jointed) 2.60. 



Pronotum: long 0.84—0.94; wide 1.50—1.55. 



Wings: fore, long 15.00, wide 4.60; hind, long 14.50, wide 5.00. 



Tibia iii. 2.00. 



Abdomen, wide 3.00—3.50. 



Affinities. — The imago of this species is very similar to that of E. vernoni, 

 n.sp., but is easily separated by its smaller size, much smaller wings and eyes, 

 light coloured thorax, etc. 



