58 PERCY SLADEN TEUST EXPEDITION. 



will form the subject of a separate paper. There is not very much novelty in the 

 collections, as might have been expected, since careful workers have already visited the 

 Seychelles ; and an excellent accovmt of the fauna may be found in the papers by 

 Martens and Wiegmann *. It may be of interest to complete Martens's table of the 

 distribution up to date, so far as it concerns the land-fauna. 



Of the above-recorded forms we may note that some — Ennea bioolor, Eulota similaris. 

 Helix aspersa, Subulina octona, and the species of Opeas — have a wide distribution, due 

 to man. Lejitopoma seychellense and Streptaxis le-vierixi are almost unknown ; while the 

 occurrence of Opeas mauritimium and Ccecilioldes mauritiantim is doubtful ; the residue 

 form the real Seychelles fauna, which is practically peculiar to the islands. Very little 

 can be at present stated as to the origin of the fauna : Streptaxis shows African 

 influence, Stylodonta that of Madagascar, while Cyathopoma is mainly Indian. The 

 connection with any mainland must have been at a very remote period, from the well- 

 marked forms {Acanthennea, Priodiscus, &c.) now found. 



1. Tropidophora -pulchrum (Gray). 



Cijclostoma puk/irum. Gray ; GriflBth's Animal Kingd., Moll. 1834, pi. 28. fig. 3; Martens, Mt. 

 Zool. Mus. Berlin, i. (1898) p. 4. 



Mah6: Chateau Margot, 1600 feet; Morne Seychellois, 2000 feet; summit of 

 Mt. Sebert, 1800 feet; Mt. Alphonse, Cascade, 1000-1800 feet; Mountain Forest, 

 Cascade; N. of Victorine. 



Praslin : Valley of Coco de Mer. 



Silhouette. 



Martens considered Pfeiffer's Leptopoma seychellanim to be the possible young of this 

 species. If the British Museum specimens are to be relied on they belong to a distinct 

 form, and I doubt if Pfeiffer's locality was quite accurate. Leptopoma seychellense, 

 Nevill, is unknown to me. 



2. Cyathopoma blanfordi, H. Adams. 



Cyathopoma blanfordi, Adams, Proe. Zool. Soc. 1868, p. 291 ; Martens, I. c. p. 5. 



Mahe : summit of Mt. Sebert, 1800 feet ; Cascade Forest ; Morne, 2500 feet. 



Silhouette. 



From the last locality the specimens are large. 



3. Selicina theobaldiana, Nevill. 



Helicina theobaldiana, Nevill, J. As. Soc. Bengal, xxxix. p. 8 (1871); Martens, /. c. p. 6. 

 Mah6: summit of Mt. Sebert, 1800 feet; Mountain Forest, Cascade, 2000 feet; 

 Mt. Alphonse, Cascade, 1000-1800 feet ; N . of Victorine ; Morne Seychellois, 2500 feet ; 

 Bel Ombre ; Chateau Margot, 1600 feet. 

 Silhouette. 



Praslin : Valley of Coco de Mer. 

 Anonyme I. 



* Mt. Zool. Mus. Berlin, i. (1898) pp. 1-94, pis. 1-4. 



