Mr. R. S. Bagnall on new Thysanoptera. 269 



yellow shaded lightly with grey-brown in the distal half or 

 thereabouts ; 4 also yellow but more deeply shaded with 

 grey-brown in the distal two-thirds or thereabouts. Legs 

 more or less yellowish, femora lightly touched with grey- 

 brown. 



Head transverse, about 1*5 times as broad as long, sides 

 convergent posteriorly; interocellar and postocular bristles 

 long and prominent, the former being decidedly the longer, 

 Antenna3 apparently more than 2*5 times as long as the 

 head, only moderately stout, much as in F. stylosa, Hood, 

 with the relative length of the joints 3 to 8 as follows : — 

 55 (with pedicel) : 52 : 39 : 53 : 8 : 9. 



Pronotum large, about 1*3 times as long as the head ; 

 bristles long and stout, the inner of the two bristles at each 

 hind angle the longest of all, about 0*6 the length of the 

 pronotum, the outer only about 0"7 the length of the inner. 

 The bristles at each anterior angle also long, but the antero- 

 marginal pair much shorter and the postero-marginal median 

 pair, shortest of all, about 0'3 the length of the pronotum. 

 Legs normal, moderately long and stout. Fore-wing with 

 25, 3 (or 4) +18, and 19 sota3 on the costa, fore-vein, and 

 hind-vein respectively. 



Abdomen of normal form, comb on posterior margin of 

 tergite 8 apparently present but indistinct in the single 

 preparation ; segment 10 open dorsally ; bristles on 9 and 10 

 long, dark, and moderately strong. 



<$ . — Scarcely 0'9 mm. in length, very slender, yellow, 

 suffused almost entirely with a light grey to grey-brown. 

 Antennal coloration much as in V , but generally paler, with 

 the shading. of 4 and 5 more clearly defined. Sides of head 

 scarcely convergent. 



Relative lengths of antennal joints 3 to 8 approximately as 

 follows :— 46 (with pedicel) : 40 : 32 : 44 : 7 : 8. Costa, 

 fore-vein, and hind-vein with 24, 3 + 15, and 15 seta3 respec- 

 tively. Macrochffitas of abdominal segments -stout, dark; 

 tergite 9 with a pair of postero-marginal median stoutish 

 spines flanked by a long bristle on either side, broadly as in 

 F. melanommata. 



This species differs from both F. schultzei (Tryb.) and 

 F. stylosa, Hood, in the subequal joints of the antennal style. 

 It comes very close to the European F. intonsa, but is recog- 

 nized by the longer prothorax, the inequality of the pronotal 

 bristles, and the less strong terminal macro'msetse in the ^ . 



Ann. & Mag. N. Hist. Ser. 9. Vol. iv. 20 



