Mr. R. S. Bagnall on new Tliysanoptera. 267 



limes as broad as long ; postocular and interocellar bristles as 

 in F. fulvipes, sp. n., 0*8 and 1*1 times the length of the eye 

 respectively. Antennae as in F. fulvipes, about 2'3 times 

 the length of the head ; relative lengths of joints approxi- 

 mately as follows :— 65 : 54 : 44 : 53 : 10 : 18. 



Pronotum slightly longer than the head, transverse ; 

 macrochaetaB as in F. fulvipes, but not quite so long compared 

 to the length of the pronotum. Minor setae of both head and 

 pronotum stronger and more conspicuous than in F. fulvipes. 



Legs normal, spines at inner apical margin of tibia not so 

 stout as in fulvipes; minor seta? numerous, longer and more 

 conspicuous, giving the legs a distinctly setose appearance 

 even under a low-power objective. 



Wings coloured as in F. fulvipes ; curled in the available, 

 material, and therefore a count of the wing-spines is im- 

 possible. 



This species is separated from F. fulvipes by the longer 

 head, which is not convergent posteriorly, the shorter 

 antenna?, and the colour of the tibiae. It is a larger, darker, 

 and coarser insect, and distinctly more spinose. Both setipes 

 and fulvipes here described may be separated from all other 

 described forms by the distinctive coloration of the antennae-. 



Bab. South Ameeica, Tucuman (Argentine); 3 ? ?* 

 with F. fulvipes, sp. n., Nov. 1905 (Vezenyi). 



c. Dark species, colour of antenna? otherwise. 



Frankliniella oxyura, sp. n. 



? . — Length c. 1*05 mm. 



Colour brown, abdomen generally darker than head and 

 pronotum ; pterothorax furnished with a good deal of red 

 hypodermal pigmentation ; femora brown, the fore-pair 

 yellowish distally ; all tibiae and tarsi yellow, the hind pair 

 lightly tinged with faint grey-brown in some specimens. 

 Antennae brown, joint 2 slightly darker than 1, 3 pale greyish 

 yellow, and 4 yellowish brown, lighter basally. Wings 

 yellowish brown, lighter, but not conspicuously so, in the 

 basal fourth. General colour yellowish-brown in light, 

 specimens. 



Head approximately 1'3 times as broad as long, cheeks 

 practically parallel. Interocellar setae apparently obsolete, 

 postocular pair minute and inconspicuous. Antennae about 

 2*2 times the length of the head, rather stout, segments 2, 3, 



