136 MEMOISS OF THE QUEENSLAXD MUSEUM. 



Measurements of holotype : — Length 1-63 mm. ; head, length 240 mm., width 

 0-199 mm.; prothorax, length 0-161 mm., width (inclusive of coxeb) 0-341 mm.; 

 pterothorax, width 0-390 mm. ; abdomen, width 0-444 mm. ; tube, length 0-175 mm., 

 wdth at base (1-083 mm., at apex 0-036 mm. 



Aiitemial segments : 12 3 4 5 



Length (fx) 48 60 65 62 61 



Width ifx) 41 33 29 34 31 



Total length of antenna, 0423 mm. 

 Described from one female taken by swee])ing in forest at Pentland, N.Q., 

 December 24, 1912. by Mr. A. A. Girault. 



LIOTHRIPS GRACILIOR sp. nov. 



Fetnale (macr apterous). — Length about 1-9 mm. Colour dark blackish brown, 

 w-ith tarsi, proximal and distal ends of all tibi», and basal portions of antennal 

 segments 3-6, yellow ; wings clear. 



Head very nearly as wide as long, entire dorsal surface rather deeply and 

 distinctly reticulate with anastomosing lines ; cheeks strongly converging to eyes, 

 nearly parallel posteriorly except for a slight subbasal constriction ; vertex not 

 produced, anterior margin straight and nearly vertical ; postocular bristles long, pale 

 in colour, capitate, equal in length to eyes. Eyes slightly more than one-third as long 

 as head, not at all protruding, equal in width to their interval ; ventral length five- 

 sevenths of dorsal, ventral interval nearly twice the ventral width. Anterior ocellus 

 slighth" overhanging, directed forward. Antennae of nearly normal .structure, twice 

 as long as head, segments 7 and 8 compactly united to form a single mass, 8 about 

 1-67 times as long as wide ; sense-cones disposed as usual in the genus ; segments 1, 

 2, 7, and 8 concolourous with head ; 2 paler at apex, 3-6 yellow, slightly infuscate 

 distally, 4 and 5 irregularly brown in apical half, 6 brown except base. Mouth-cone 

 rounded, nearly attaining base of presternum. 



Prothorax about 0-73 as long as head and (inclusive of coxa?) about 2-3 times 

 as wide as long ; pronotum smooth at middle, margins with faint, anastomosing lines ; 

 median thickening distinct ; all usual bristles present, capitate, the anterior marginals 

 and posterior marginals shorter than the others, which are subcq'ual and nearly as 

 long as iKjstoculars. Wings broad, colourless, fore pair with about fourteen accessory 

 hairs on posterior margin, and with the three subbasal bristles capitate. I'^ore tarsus 

 with a long, stout, slightly hooked tooth. 



Abdomen of normal form and structure, 'i'ubo about 0-77 as long as head, 

 sides straight, Abdominal bristles long, pale, capitate, those on segment 9 three- 

 fourths as long as tube. 



Measurements of holotype : — Length 1 -86 mm. ; head, length 0-250 mm., width 

 0-245 mm. ; prothorax, length 0-181 mm., width (inclusive of coxa;) 0-415 mm. ; 

 pterothorax, width 0-420 mm. ; abdomen, width 0-522 nun. ; tube, length 0-192 mm., 

 width at base 0-090 mm., at ajwx 0-042 mm. 



