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



brown, 3 to 5 and basal third of 6 very pale creamy yellow, 

 almost white, and 6 distally and style light grey-brown ; fore- 

 wings dark brown, basal fourth or thereabouts much lighter; 

 fore-femora yellowish-brown, all tibige and tarsi pale yellow, 

 sometimes lightly touched with pale grey-brown. 



Head as in F. insularis, narrowed posteriorly and about 

 1*3 as wide across eyes as long ; postocular and interocellar 

 bristles well-developed, approximately 0*7 and nearly 1*0 the 

 length of the eye ^respectively, the postocular pair almost 

 touching the hind margins of the eyes. Antennae about 2*5 

 times as long as the head, general form much as in F. insu- 

 laris, with apical setae of intermediate joints very long and 

 strong; relative lengths of joints 3 to 8 approximately as 

 follows :— 76 : 67 : 48 : 57 : 10 : 20. 



Pronotum 1'3 times as long as the head, transverse ; macro- 

 chaetae as in insularis, almost subequal in length, the inner 

 antero-marginal pair being nearly 0*9 or more the length of 

 pair at posterior angles, which latter are Q'6 the length of the. 

 pronotum. Legs normal, pair of stout dark spinelets at 

 apex of fore and intermediate tibiee within and the series on 

 the inner edge of hind tibiee numbering 8 or 9, the pair at 

 apex being long, stout, and straight, approximately 8 the 

 width of the tibiae near apex. Wings normal, spines of costa, 

 fore-vein, and hind-vein numbering about 26, 19, and 17 

 respectively. 



Abdomen slightly broader than pterothorax ; last two 

 segments inclined to be darker than the rest of the body; 

 segment 10 divided for the most of its length above; terminal 

 bristles long, stout, dark. 



This species comes nearest to F. insularis (Franklin), but 

 is readily recognized by the coloration of the antennae and 

 the relative lengths of the joints, and the coloration of the 

 tibiae. 



Uab. SOUTH America, Tucuman (Argentine) ; 4 ? ? , 

 November 1905 (Vezenyi), with F. selipes, sp. n. 



Frankliniella setipes, sp. n. 



? . — Length about 1*5 mm. 



Colour uniform dark chestnut-brown, fore-tibiae inclined to 

 be lighter ; all tarsi pale yellow ; first two antennal joints 

 concolorous with head, joints 3 to 5 and basal half of 6 pale 

 lemon-yellow, distal half of 6 and style pale grey-brown. 



Head not noticeably convergent posteriorly, about 1*2 



