THE COMMON MARINE SHELLS OF THE BOMBAY SHORE, 222 
Lritonidea (Cantharus) spiralis (Gray).—Shell has a rough epi- 
dermis, beneath which it is smooth, white and with burnt markings ; 
whorls about 7, strongly ribbed, 8 to 9 ribs on last whorl, 3 on upper 
ones ; last whorl undulating, and looking-down on to the apex ; the 
shell is hexagonal in outline ; mouth white and porcellanous. 
Urosalpina contracta (Reeve).—Fusiform, thick, about 14” long and 
" broad ; spire tall and spirally, closely striated ; old shell, often chalk-. 
white ; young brown with dark bandings ; upper whorls prominently 
tubercled, formed in the last into longitudinal ridges ; mouth oval and 
canal distinct. . 
Recinula (Sistrum) tuberculata (De-Blain).—A small but remarkably 
massive shell ; easily known by the strong, dark, rounded tubercles 
standing out of a greyish ground; mouth purple-tinged, strongly 
toothed inside in the mature shell ; length, 2” ; breadth, ¥", 
Columbella terpsichore (Iueathes).—A small shining slightly fusiform 
shell ; white or light yellow ; longitudinally fluted ; ridges brown 
coloured and shell figured with yellow markings ; mouth narrow ; 
spire sharp ; length, }! to 8"; breadth, 4’, 
OLIVIDA. 
Oliva nebulosa (Lam.).—One of the commonest shells on our 
sandy shore ; cylindrical ; sharp-pointed, shining, thick ; mouth, long 
and narrow and widest at the base ; colour, whitish-yellow with 
fading grey zigzag cloudings and a broad yellow encircling band 
near the base of the shell ; length, 1" to 12”, When bleached, the 
markings become reddish. 
There are two other shells fairly common here, which, though belong- 
ing to none of the families or divisions given, should be mentioned, 
BULLIDA. 
Haminea galba (Pease)—An extremely delicate little oval shell 
transparent white or yellow ; aperture the full length of the last whorl, 
and broadening into an oval at the base ; apex instead of being pointed 
is indented, 
SCAPHOPODA. 
Dentalium longitrorsum (Reeve).—A long slightly curved cylinder 
open at either end; shell white and shining ; length, generally 
1" to 2" ; resembles in miniature an elephant’s tusk, 
