1869.] LAND-SHELLS OF THE SEYCHELLES. 65 
slightly as regards the convexity of the whorls, the striation, and 
the spiral angle; these varieties I possess from all the above locali- 
ties, occurring in all instances with others of the typical form. If 
E. ceylanica is to remain as a good species, I have three or four 
others possessing equal, or greater, claims to be distinguished. 
16. Hexicrna ye 
From Mahé, Praslin, and Silhouette. Amongst decayed leaves 
&c., on the ground. The shell varies somewhat in colour, sometimes 
being a bright red, at others an orange-yellow. 
17. OncHipIUM 2 
From Mahé. Under stones &e., in damp places; common. 
18. OnNcH1IDIUM 2 
From Praslin. On the stems and leaves of the ‘‘ Coco-de-mer.” 
The differences between this and the preceding species afford a cu- 
rious parallel to those between Sty/. wnidentata and Styl. studeriana. 
In each instance the Praslin species are far more finely developed 
than their Mahé representatives: whilst the latter appear to live 
always on the ground, the former seem to prefer a different habitat. 
Sometimes one sees the sea-cocoanut-trees covered with shells, not 
only the two above mentioned, but also Bulimus fulvicans, Cyclosto- 
mus pulcher, and others. On the common cocoa-nut tree I never at 
any place found any shell except Bulimus fulvicans. This species 
differs from the preceding in being considerably larger, in not pos- 
sessing the oblong blackish spots, but in being covered with regular, 
small, roughish pustules, of the same colour as the rest of the animal, 
which is extremely variable. I found black, brown, and pure-white 
varieties; the underneath part also, instead of being a pinkish cho- 
colate colour, is darkish yellow (varying in shade, sometimes quite 
white). 
19. CycLostomus (TRopIpOPHORA) PULCHER, Gray. 
From Mahé, Praslin, and Silhouette. On the Coco-de-mer, 
shrubs, &c. The shell varies in colour, but not, apparently, in form. 
20. CyaATHOPOMA BLANFORDI, H. Ad., n. sp. 
From Mahé. Extremely rare; amongst decayed leaves &c., on 
the ground, near a stream, rather high up. 
21. CARYCHIUM, n. sp.? 
From Praslin, near the Protestant church, at the foot of a common 
cocoa-nut tree. I unfortunately only found a single specimen, 
which I hardly like to describe as new, though it differs from C. mau- 
ritianum 10 very many respects. 
22. MELAMPUS Livipus, Desh. 
From Mahé and Praslin. 
Proc. Zoou. Soc.—1869, No. V. 
