Hood — Australian Thysanoptera. 85 



Head as long as wide, broadest and slightly swollen just behind eyes, 

 cheeks converging to base of head and smooth, save for a few minute 

 spines; postocular bristles one-third as long as head, nearly pointed. Eyes 

 one-third as long as head, rounded, somewhat protruding, and about 0.7 

 as wide as their interval. Anterior ocellus situated in front of anterior 

 margin of eyes and slightly overhanging base of antenna}, the two posterior 

 ones with their hind margins opposite center of eyes. Antennae nearly two 

 and one-third times as long as head, segment 8 conical and broadly united 

 at base to segment 7; sense cones long and distinct, formula: 3, 1-1; 4, 

 1-1; 5, 1-1 + 1 ; 6, 1-1+ 1 ; 7 with one on dorsum near apex; segments 1 and 

 2 and 4-8 nearly concolorous with body, the apical segments slightly 

 paler; segment 3 abruptly light yellow. Mouth cone reaching about two- 

 thirds across presternum and broadly rounded at tip; labrum not surpass- 

 ing labium. 



Prothorax about 0.84 as long as head and (inclusive of coxae) about 1.9 

 times as wide as long; anterior marginal bristles very minute; others dis- 

 tinct, nearly pointed, the three posterior pairs subequal, fully as long as 

 postoculars and about twice as long as anterior laterals; coxal bristle 

 nearly as long as midlateral. Pterothorax distinctly wider than prothorax, 

 sides slightly converging posteriorly. Wings of nearly equal width through- 

 out, fore pair without accessory hairs on posterior margin and with only one 

 subbasal bristle, instead of three. Fore tarsus with a long, slender, nearly 

 straight tooth arising at right angles to the tarsus. 



Abdomen of normal shape, distinctly wider than pterothorax. Tube 

 about 0.87 as long as head, about 1.9 times as long as basal width, and more 

 than twice as broad at base as at apex. Bristles long, scarcely pointed, 

 those on the ninth segment about 0.8 as long as the tube; terminal bristles 

 two-thirds the length of tube. 



Measurements of holotype ($): Length 1.48 mm.; head, length 0.192 

 mm., greatest width 0.192 mm., width at base 0.168 mm.; eyes, length 

 0.063 mm., width 0.054 mm., interval 0.075 mm.; postocular bristles, 

 length 0.063 mm.; prothorax, length 0.162 mm., width (inclusive of coxae) 

 0.307 mm.; pterothorax, length 0.348 mm., width 0.360 mm.; abdomen, 

 greatest width 0.433 mm.; tube, length 0.168 mm., width at base 0.088 

 mm., at apex 0.039 mm.; fore wings, length 0.960 mm., width at middle 

 0.096 mm. 



Antennal segments: 12345678 

 Length (/x) 51 60 63 63 65 60 49 36 



Width (m) 41 36 37 35 34 32 26 18 



Total length of antenna, 0.447 mm. 



Described from a single specimen taken by sweeping in a forest, at 

 Brooklyn, New South Wales, November 10-13, 1914, by Mr. A. A. 

 Girault. 



Distinguished at once by the union of the two apical antennal segments 

 and the antennal coloration. 



