^Ir. II. S. Bngiiall on veto Thyaanoptera. 593 



setose. Lej^s almost ;i3 in the previously described species, 

 but with more minute sctas, and the series of setae on inner 

 side of hind libioe shorter and stouter and starting at about 

 the middle. Pterothorax large, at least I'G times as broad 

 as the prothorax and hut slightly longer than broad; disc 

 faintly reticulated. Witing reaching to eighth abdominal 

 segment; setaj of fore-wing short, stout, and very dark. 

 Costa, up|)er and lower vein furnished with approximately 

 38, 28 (3 + 7 + 18), and 23 setje respectively, upper fringes 

 sparse, lower wavy. Abdomen elongate, narrower than 

 the pterothorax, with sides subpandlel to segment G, 

 thence faintly narrowing to 8 ; 9 and 10 together obconical, 

 and the latter ojjcn dorsally ; bristles on 9 and 10 long. 



A fine, richly coloured species. 



Ilab. W. Australia ; taken by Professor E. B. Poulton 

 from the flowers of a small Acacia-tiQG (probablv A. baileiiann, 

 F. v. Midi.). Mundaring Weir, Darling Uange, Perth, 

 Aug. 3rd, 1914 (tube 16), and from the flower.s of Acaria 

 2-)ulche//a. R. Br., Cottesloe Beach, near Fremaiitle, Aug. 31st, 

 1914 (lube 2C)). 



b. Bognallia type. 



Isoneurothrips orientalis, sp. n. 



2 . — Length approximately 14 mm. 



Colour dark blackish-brown ; fore-femora lighter brown, 

 with tibi?e yellowish, shaded to brown at margins ; inter- 

 mediate tibiae somewhat lighter distally. Antennal joint 3 

 yellowish-white, tinged with grey to a light brown, 4 greyish- 

 white at base and 5 to 7 entirely brown. Head about 0"85 

 as long as broad, surface transversely striate ; eyes mode- 

 rately largely facetted, pilose. Ocelli large, placed well 

 back, and j)OSterior pair touching the inner margin of ej^es. 

 Antennas 2*2 times as long as the head, joints 4 to 7 slender 

 3 and 4 constricted near apex ; approximate length and 

 breadth of 3 to 7 as follows : — 



18 : 19 : 14 : 18 : o 

 (3:7:5:5 : 2* 



Prothorax quadrate, scarcely longer than the head ; 1*5 times 

 as broad as long. Sctfe at hind angles long, 0\5 as lono- as 

 the pronotimi. Legs much as in I. australis. Wings grey- 

 brown, .se!s9 longer and more slender than in /. australis. 

 Abdomen long and linear. 



Ann. cf- Ma</. X. Hist. Ser. 8. Vol xv. 40 



