Quarterly Journal of Concholog). 30 1 



Deshayes, and the fauna of the Uttle island of Rodriguez has 

 been monographed by Crosse. We are not aware of any mono- 

 graph of the fauna of Mauritius, but, though it has to be sought 

 for in various pubUcations, the malacology of Mauritius is about 

 the best worked out of any. The Seychelles are perhaps not so 

 fully explored as the rest of the Region, but still are very fairly 

 known. 



A. Mauritius. The genus Nanina is abundant, and contains 

 some peculiar forms (Erepta ■xddi.Stylodon). H. i/iversicola, formerly 

 referred to Caracolus, has also been shown by Messrs. Binney and 

 Bland to be a Nanina. The species- of Gonospira are very numer- 

 ous (27), and there are 3 of the peculiar genus Gibbus. There is 

 I Hainesia. Realia, a genus we shall oftea meet with again, is 



represented by 10 species. The typical Cyclostoniid(Z are not so 

 very numerous as in Madagascar, nevertheless there are 2 species 

 of Ofopoina^ i Cyclotopsis, 2 Tropidophora, and 2 Cyclostonius. i 

 species has been referred to Simpulopsis, which must be considered 

 rather doubtful, and i to TornatelUna. 



B. Reunion. There is one species of Vitrina, a genus absent 

 elsewhere, in the East of Africa. There are several A^«;////c<? (in- 

 cluding I Xcsta), 6 species of Gonospira, i TornatelUna, and 4 

 species of Realia. 



C. Rodriguez. Except a species of Streptaxis, all the shells of 

 this island are of the same genera as those of Mauritius and Re- 

 union. 



D. Seychelles. The shell formerly called Jlelis unidentata, now 

 Nanina (Stylodon) unidentata is characteristic of these islands, 

 which have also the following genera, not found in Mauritius, etc., 

 Hyalina i, Streptaxis i, Streptostele i (a genus only occurring else- 

 where in Prince's Island, on the West Coast\ Cyathoponia i (an 

 Indian genus), Leptopoma i (a genus of the East Indian Archi- 

 pelago), Helicina i (the first apperance of this genus). 



