Mr. R. vS. Bagnall on new Thysanoptera. 209 



Victoria, on Acacia decurrens v. niollissima; Acacia Jim- 

 briata ; Acacia melanoxylon ; Prostanthera lasiantha ; JJa- 

 visia alicina ; Escallonia montevidensis with larvaj ; Eryn- 

 gium pandanafolium ; Polygonum sp. ; roses; wall-flowers 

 and amongst dead seeds of Bursaria spinosa (A. E. Shaw & 

 11. Kelly). Warburton, Victoria, on Senecio velleioides, 

 Leptospermes scoparium, and Laurestinus sp. {R. Kelly) . 



Distinguished from H. fuliginosus (Schille) by its larger 

 size, deeper coloration, shorter head, etc. The postoeular 

 and pronotal setEe and those on the wing-scale are pointed in 

 fuliginosus and are more slender than in victo rituals. 



b. Form heavy, wings clear, broad basally and distally, 

 without duplicated cilia. Hab. AUSTRALIA. 



Ilaplothrips robustus, sp. n. 



$ . — Length 1*6 mm. ; breadth of mesothorax 0*38 mm. 

 Colour brown, head, thorax, and end of abdomen darker ; 

 fore-tibipa shaded yellowish distally and fore-tarsi yellowish. 

 Antennal segments 1, 2, and 5 to 8 uniform dark grey-brown, 

 4 lighter brown, and 3 yellowish. Wings clear excepting 

 for a light brownish patch at base. Hypodermal pigmenta- 

 tion heavy. 



Head scarcely perceptibly longer than broad at base 

 (where it is broadost), cheeks straight, widening posteriorly, 

 though this may be exaggerated by pressure in mounting : 

 vertex produced in the form of a hump, more pronounced 

 than usual, upon the apex of which the overhanging anterior 

 ocellus is seated. Postoeular bristles short, blunt. Anteninu 

 about 1'8 times as long as the head, segment 4 broader than 

 either 3 or 5 ; relative lengths of segments 3 to 8 approxi- 

 mately as follows : — 50 : 55 : 48 : 45 : 44 : 33. In one 

 example segment 6 is longer (49 instead of 45) and at least 

 half the suture between 7 and 8 is fused. 



Prothorax Q'65 the length of the head and about twice as 

 broad as long; setas moderately long, blunt, colourless; the 

 one at each posterior angle the longest, about 0*45 the length 

 of the prouotum. Fore-tarsus armed with a minute tooth ; 

 fore-femora slightly incrassate. Wings broad, the fore pair 

 being curiously broadened just beyond basal scale and again, 

 but neither so strongly nor suddenly, beyond median con- 

 striction. Abdomen very slightly broader than pterothorax. 



