Hood — Australian Thysanoptera. 81 



Head about 1.38 times as long as wide, broadest at basal third, sides con- 

 verging roundly to eyes and to base of head, narrowest at posterior angle 

 of eyes; extreme base of head and cheeks with a few faint anastomosing lines 

 and a few minute colorless spines; vertex arched and forming a low ridge 

 extending forward between basal segments of antennae, not overhanging; 

 postocular bristles about 0.8 as long as eyes, expanded at tip. Eyes about 

 one-third the length of head, distinctly protruding posteriorly. Anterior 

 ocellus directed forward and upward, not overhanging; posterior ocelli 

 just in advance of a line drawn through middle of eyes. Antennae about 

 1.9 times as long as head; segments 7 and 8 not closely united; sense cones 

 slender; formula: 3, 1-1; 4, 1-2; 5, 1-1 + 1 ; 6, 1-1 + 1 ; 7 with one on dorsum 

 near apex; segments 1 and 2 brown, concolorous with head, 2 paler at apex; 

 3-6 pale yellow, almost colorless, 6 slightly infuscate; 7 and 8 brown, 

 lighter than head. Mouth cone blunt, much shorter than width of head, 

 reaching about two-thirds across prosternum; labrum constricted before 

 apex, about attaining tip of labium. 



Prothorax about 0.6 as long as head and (inclusive of coxae) about twice 

 as wide as long; surface smooth, no median thickening; all usual bristles 

 present, expanded at tip, the two pairs at the posterior angles equal to 

 postoculars, the others and coxal half as long. Pterothorax about equal in 

 width to prothorax, sides roundly converging in posterior half. Legs 

 moderately short, fore femora not at all swollen, fore tarsi unarmed. Wings 

 clear, very weak and slender, slightly narrowed at middle, hind margin with- 

 out accessory hairs; subbasal bristles capitate, the outer one longest and 

 subequal to postocular. 



Abdomen normal; bristles largely capitate, all three pairs on segment 9 

 pointed and subequal in length to tube, the terminal bristles distinctly 

 longer than tube. Tube about two-thirds as long as head, slightly more 

 than twice as long as basal width, and nearly twice as wide at base as at 

 apex. 



Measurements of holotype (9): Length 1.19 mm.; head, length 0.174 

 mm., greatest width 0.126 mm., least width 0.115 mm.; eyes, length 0.060 

 mm. ; width 0.036 mm., interval 0.045 mm. ; postocular bristles, length 0.050 

 mm.; prothorax, length 0.103 mm., width (inclusive of coxse) 0.208 mm.; 

 pterothorax, length 0.240 mm., width 0.204 mm.; abdomen, greatest width 

 0.211 mm.; tube, length 0.112 mm., width at base 0.051 mm., at apex 

 0.027 mm. 



Antennal segments: 12345678 

 Length (/*) 33 43 42 47 46 45 40 34 



Width (/*) 32 42 24 26 23 21 19 11 



Total length of antenna, 0.330 mm. 



Described from two females, both taken by sweeping in forest at Nelson, 

 North Queensland, by A. A. Girault. One was collected July 7, 1912, and 

 the other December 4, 1913. 



Distinguished by the coloration and the unarmed fore tarsi. 



