SYKES — LAND AND FKESHWATBE MOLLUSCA. 59 



4. Ennea dussumieri, Ferussac. 



Ennea [Edentulina) dussumieri, Per. ; Martens, Mt. Zool. Mus. Berlin, i. (1898) p. 7. 



Mahe : Trois Pr6res, 1500 feet ; Mountain Forest, Cascade ; Mt. Aljjliouse, Cascade, 

 1800 feet ; summit of Mt. Sebert ; Morne Seychellois, 2500 feet ; Ciiateau Margot, 

 1600 feet. 



Silhouette. 



Praslin : Valley of Coco de Mer. 



5. Ennea moreleti, H. Adams. 



Gibbus moreleti, H. Adams, Proc. Zool. Soc. 1868, p. 291. 

 Ennea [Edentulina) moreleti, H. Ad. j Martens, I. c. p. 8. 



Mahe : Cascade Forest. 

 Silhouette. 



6. Ennea gardineri, sp. n. (See fig. 1.) 



Shell cylindrical, smooth, shining, with the apex rounded, opaque, very pale horn- 

 colour ; whorls 8i, flattened, with well-marked suture, the last whorl ascending where 

 the outer lip joins the body-whorl ; mouth suhquadrate, edentulous, outer lip thickened 

 and the columellar margin twisted. 



Alt. 6 ; diam. max. 2 6 millim. 



Mah. Mahe : Mt. Alphon.se, Cascade, 1800 feet (type) ; Mountain Forest, Cascade, 

 2000 feet ; summit of Mt. Sebert, 1800 feet. 



Var. a. Smaller and narrower in proportion. 



Hab. Mahe : Cascade Forest. 



Fig. 1. 



Ennea gardineri, x 5. 



I think these two forms are only races of one species, which may be distinguished 

 from the others described from the Seychelles by its small size and polished smooth 

 surface. I have much pleasure in giving it the present name. 



7. Ennea thomasseti, sp. n. (See fig. 2.) 



Shell elongate -cylindrical, smooth, shining, almost transparent, very pale horn-colour ; 



