LITTORINIDS. 161 
3 Muscat; coll. W. T. Blanford, Esq. 
7 Red Sea; exc. Dr. H. Dohrn. 
5 Roweiah and Aden; coll, J. B. Baxter and G. Nevill, Esqrs. 
An intermediate form, as to sculpture, between the two 
figures in Descr. de l’ Egypte. 
9. Risella [Peasiella] roepstorffiana, n. sp. 
20 Arakan; exc. Dr. F. Stoliczka. 
Uniform yellow coloration throughout; very small umbili- 
cus ; nearly smooth above, never subimbricate at the sutures, 
only very rarely slightly undulately “‘ waved ” at the periphery. 
10 Andamans ; coll. F. A. de Roepstorff, Esq. 
Alt. 27, diam. 33 mil. 
10 Mergui; coll. Dr. J. Anderson. 
5 Hongkong; coll. R. Hungerford, Esq. 
“Lives on rocks, about high-water mark!” The narrow 
umbilicus resembles that of Red Sea specimens. Two of 
them possess a basal dark zone, as in BR. templiana var. nigro- 
fasciata. Not subimbricate. 
10. Risella [Peasiella] templiana, u. sp. 
Exceedingly variable in coloration and sculpture; seems, 
however, to be constantly distinguished from the preceding 
forms by its considerably more open umbilicus, constantly stained 
of a rich chesnut; the columella seems to be more distinctly 
thickened and is of the same colour; the form I take for my type 
is evenly, spirally striate above, striation more or less obsolete 
on the apical two or three whorls; aperture of a uniform saffron 
yellow within; no subimbrication, or peculiar sculpture of any 
sort, at the suture; three or four deeply excavated spiral sulca- 
tions at base. Long. 33, diam. 4 mil. 
12 Andamans [type]; coll. Capt. R. C. Temple. 
var. nigrofasciata. 
The interior of the aperture shows two dark-brown bands, 
one quite close to the suture, the other quite at its base; a 
rather broad, dark-coloured band also round the base, just below 
L 
