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Show 6 1 MR. GEOFFREY NEVILL ON THE [Jail. 28, 9. SUBULINA MAURITIANA, Pfr. From Mahe and Silhouette. Amongst the husks of Cocoa-nuts, under stones, &c. This shell, as well as the following, belongs to a most perplexing group; though I have examined a great many specimens, from every place where I have been, I have been unable to come to any satisfactory conclusion concerning them. The present species I take to be the same as one from Mauritius, but which I did not find at Bourbon ; it is, if not the same, very closely allied to the common S. gracilis, Hutt., of Ceylon and India, although I have never seen the latter at all approaching it in size; the striae also are a shade stronger, and the last whorl is a little less rounded and more angular in the present species. It is very variable in size, my largest specimen having ten whorls and being 16 mill, long, while usually they have eight whorls and are about 12-14 mill, in length. 10. SUBULINA, n. sp.? From Mahe', Praslin, Silhouette, and Felicite'. In the same localities as the preceding. Certainly distinct from S. clavulus and S. mauritiana, also from S. gracilis, being more nearly allied to S. clavulina, P. & M., from which, however, it seems to constantly differ in several respects. This Seychelles species I also found at Bourbon and Mauritius; S. clavulina, on the other hand, only at Mauritius. 11. ACHATINA FULICA, Fer. From Mahe, Praslin, and (I believe) Silhouette. A smaller, thinner variety than the Mauritian type; never very far from cultivated land. 12. ACICULA MAURITIANA, H. Ad., n. sp. From Mahe. Rare ; under stones &c. 13. SUCCINEA ?STRIATA, Kr. From Mahe, Praslin, Silhouette, and Felicite. Amongst decayed leaves &c, on the ground. This is certainly the same as the Mascarene species. 14. GIBBUS MORELETI, H. Ad., n. sp. From Silhouette. Extremely scarce; I only found one specimen, at a great height. 15. ENNEA BICOLOR, Hutt. From Mahe, near Port Victoria, in the cinnamon groves. After a very careful examination of a large number of specimens from Mauritius, Seychelles, Ceylon, and India, I am convinced they are all one and the same species, in which case Pfeiffer's E. ceylanica must become a synonym. I have examined the animals both at •Mauritius and Ceylon, which are perfectly similar. The shell varies |