286 Mr. R. 8. Bagnall on Thysanoptera 
in the type-specimen. Duplicate bristles of fore-wings 26 
32. 
Loc. Seyvcueties. Silhouette: 2 2 andl @, from which 
the types are taken, from Mare aux Cochons, 6. ix. 1908; 
2%, 1, Mare aux Cochons (or the forest immediately 
above). Mahé: 3 29,4 ¢, country above Port Glaud, about 
500-1000 feet, 5. xi. 1908; 2 9 and 1 g, Cascade Estate, 
about 1000 feet, 11. & ii. 1909; and 9 ? and6 ¢ near Morne 
Blane. 
The pronotal chetotaxy is distinctive. This appears to 
be the commonest species of Idolothripide on the Islands. 
ADDENDUM ON MATERIAL FROM RODRIGUES. 
Since the original material from the Seychelles Islands 
was dealt with, Dr. Scott has, as already stated, sent mea 
small but intensely interesting collection of thrips from 
Rodrigues Island. Some general remarks on this island and 
on the affinities of the material will be found above (p. 260). 
Suborder TEREBRANTIA. 
Family Thripide, Uzel. 
1. Tryphactothrips brevisetis, Bagn. 
There are six carded examples (since prepared as micro- 
scopic mounts) apparently referable to this species, and 
separated at once from the two known species, rutherfordi 
(Bagn.) and rodoris, Bagn., by the short wing-setze. The 
West-African species, roboris, is quite different from the 
other two, and readily recognized by the short and strongly 
transverse head and pronotum. 
Form and size as in rutherfordi, golden-yellow to yellow- 
brown, suffused with grey-brown and more darkly brown 
at the sides of head, pronotum, pterothorax, and abdomen 
excepting the three apical segments; fore-legs yellow lightly 
tinged with yellow-brown ; hind-tibiz and all tarsi also 
yellow ; hind-femora light brown, intermediate femora and 
tibie dark black-brown, yellowish at knee. Antenne with 
joints 1 and 2 yellowish-brown, 3 to 5 clear yellow, and 6 to 8 
brown, extreme base of 6 narrowly clear yellow. 
The curious explanate frill-like margins of the head and 
pronotum appear to be less prominent than in rutherfordi, 
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