64 MR. GEOFFREY NEVILL ON THE [Jan. 28, 
9. SUBULINA MAURITIANA, Pfr. 
From Mahé 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 spe- 
cimens, 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 | 
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 strize 
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. SusuLina, n. sp.? 
From Mahé, Praslin, Silhouette, and Félicité. In the same loca- 
lities 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 Mahé, Praslin, and (I believe) Silhouette. A smaller, 
thinner variety than the Mauritian type; never very far from culti- 
vated land. 
12. ActcuLa MAURITIANA, H. Ad., n. sp. 
From Mahé. Rare; under stones &c. 
13. SuccineA ?striaTA, Kr. 
From Mahé, Praslin, Silhouette, and Félicité. Amongst decayed 
leaves &c., on the ground. This is certainly the same as the Mas- 
carene species. 
14. Gissus moreteti, H. Ad., n. sp. 
From Silhouette. Extremely scarce; I only found one specimen, 
at a great height. 
15. ENNEA BIcoLor, Hutt. 
From Mahé, 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 2. ceylanica 
must become a synonym. I have examined the animals both at 
Mauritius and Ceylon, which are perfectly similar. The shell varies 
