68 PERCY SLADEN TRUST EXPEDITION. 
which are exceedingly difficult to separate, owing to their great variability in all the 
points which Bouvier uses to diagnose them. I think it probable that their distinctness 
will not eventually be upheld in all cases. Mr. Stanley Gardiner would be glad to 
forward the specimens to anyone who would care to examine them statistically. 
29. Caridina nilotica (Roux), 1833. 
Bouvier, Bull. Sci. Fr. Belg. 1905, pp. 72, 78. 
The rostrum does not quite reach the end of the antennal scale in my specimens. 
Locality. Cascade River, Mahé, Seychelles, 800 ft. 
30. ?Caridina multidentata, Stimps., 1860. 
Bouvier, Bull. Sci. Fr. Belg. 1905, p. 74. 
The rostrum of my specimens is stout up to the end, but not quite so stout as in 
typical specimens. 
Locality. Cascade River, Mahé, Seychelles, 800 feet. 
Bouvier (Joe. cit.) also records C. apiocheles from the Seychelles. 
