958 Mr. R. 8. Bagnall on Thysanoptera 
islet (containing very little indigenous vegetation) off the 
coast of Mahé. 
A first set, including types of all new forms, will be placed 
in the British Museum of Natural History. 
The Seychelles Islands. 
The following is a list of the species described from the 
Seychelles Islands : Mahé (M) and Silhouette (S) :— 
TEREBRANTIA. 
1. Tryphactothrips brevisetis, sp. 3, Limothrips cerealium, Hal. M. 
Hn, ME, 4. Thrips sp. 8. 
2. Brachyurothrips anomalus, gen, 
et sp.n. M. 
TUBULIFERA. 
5. Haplothrips mahensis, sp.n. M. | 14. Adiaphorothrips brevis, sp. un. 
6 silhouettensis, sp. Nn. | M. 
7. Acallurothrips proturus, sp.n. | 15. Lurynothrips denticollis, Bagn. 
8. M. 
8. macrurus, gen, et sp. n. | 16. Liothrips nigricornis, sp.n. 8. 
: ly: intrepidus, sp. Nn. 
9. Cenurothrips: brevicollis, gen. | 18. sp. (P micrurus, Bagn.). 
etsp.n. M. M. 
10. validus, sp.n. 8S. 19. Dicaiothrips seychellensis, sp. n. 
ll. Gynaikothrips scotti, sp. n. i SY 
M.Sc 20. FEL, BV. Heo. 
12. Cryptothrips seychellensis, sp.n. | 21. ——- mahensis, sp.n. M. 
M. 22. —— hystrix, sp.n. M.,S. 
13. —— diffcilis, sp.n. S. 
Of the twenty-two species (representing thirteen genera) 
enumerated above, two—Thrips sp., 6, and Liothrips sp. 
(? micrurus, Bagn.)—are represented by single examples in 
too poor a condition to identify with certainty or to describe. 
Of the twenty remaining, thirteen are found in Mahé, the 
largest island of the group, but two of these were previously 
known; whilst ten hail from Silhouette. It will be noticed 
that only three species are common to the two islands, but 
it should be pointed out that there are several instances of 
two allied species of a genus being peculiar, the one to 
Mahé and the other to Silhouette, and, though closely allied, 
I feel confident from the material before me that these forms 
in most, if not in all, such cases, will be confirmed as speci- 
fically distinct when more and better material is available. 
Four new genera and eighteen new species are characterized, 
but, of the new genera, Tryphactothrips is diagnosed with 
