274 . PERCY SLADEN TRUST EXPEDITION 



It is at present impossible to compare the homopterous relationship of Madagascar 

 and the Mascarene Islands with the similar fauna of the Seychelles, for the 

 first is still practically unworked and unrecorded except in the larger and more 

 conspicuous features, nor judging from the conclusions of other entomologists who 

 have worked out different groups of insects is such a relationship likely to be 

 pronounced. After working out a very large portion of the homopterous fauna of 

 British India, I strongly incline to the view that it is in that and adjoining regions 

 that the Seychellian Homoptera find their nearest relationship, though it is not 

 a close one, qualified but evident. The material does not at present exist for a 

 detailed comparison. 



BIBLIOGRAPHY 



Walker, Fras. Descriptions of a few species scattered throughout the Catalogues of Heteroptera 

 and Homoptera published by the Trustees of the British Museum, 1850 — 1873. The specimens 

 were presented by Prof Percival Wright, and some are labelled "Round Island." 



E. Bergroth and 0. M. Reuter. " Mission Scientifique de M. Ch. Alland aux iles Seychelles, 

 Het^ropteres." Rev. d'Entomol. xii. pp. 197—209 (1893). 



LiNELL, Martin L. "On the insects collected by Dr Abbot on the Seychelles, Aldabra, Gloriosa 

 and Providence Islands." Proc. U.S. Nat. Mus. xix. pp. 695 — 706 (1897). References to the 

 Rhynchota very few. 



VoELTZKOw, Alfred. "Die von Aldabra bis jetzt bekannte Flora und Fauna." Abhandl. Senckenb. 

 Nat. Ges. xxvi. pp. 641 — 565 (1902). In this publication is (p. 561) a list of 20 species of 

 Heteroptera, of which Dr Bergroth has written to inform me that he gave the list of " 18," 

 probably an error for " 20," some of which in the " Gerridse " are ascribed to a genus " Telmalisea," 

 of which I can find neither reference nor description. Dr Voeltzkow also refers to a paper by 

 the same writer in the same publication (Bd. xxvii), of which I can find no trace. 



Distant, W. L. " Sealark " Rhynchota. Trans. Linn. Soc, ser. 2, Zool, ■ vol. xiii. pp. 29 — 47, 

 PL 4 (1909). 



" Rhynchota," Part I, Subord. Heteroptera. Trans. Linn. Soc, ser. 2, Zool., vol. xvi. pp. 139 — 191, 



Pis. 11—13 (1913). 



Order Rhynchota. 



Suborder Homoptera. 



Family Cicadidse. 



Only two species of this family have been received from the Seychelles and 

 possibly they are the only representatives of the family in these islands. Martin 

 L. Linell*, writing on the " Insects from Gloriosa Island," mentions " a large Cicada 

 closely allied to the South African Platypleura limhata Fabr." which is doubtless the 

 Yanga seychellensis Dist., enumerated in the present paper. Another species which 

 he mentions t as ''very much resembling Tettigia orni from Europe, but smaller, is 



* Proc, U. S. Nat. Mus. xix. p. 702 (1897). 

 f Log. cit. p. 696. 



