221 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. VIII, 
part of shell ; smooth or slightly ridged longitudinally ; mouth nar- 
row, oval, dark, and ridged inside ; outer lip thickened ; sinus deeply 
cut back ; colour variable—whitish, grey tinged with yellow markings. 
Bullia lineolata (Wood): -—A smooth, shining, thin tapering shell ; 
whorls. 7 to 8, grooved towards.the base; colour yellow with grey 
tinge, and more or less streaked with longitudinal brown lines ; mouth 
- widest at the base, and sinus broad ; length, about #”, breadth, 2”. 
We now come to the Purpuras, which live chiefly amongst the 
boulders of our shore-at low tide,mark. 
Purpura bufo (Lam.)—A thick, massive, large shell, generally en- 
erusted with limey matter hiding marking and colour ; spire depressed, 
last whorl enveloping the whole shell nearly, and generally with swollen 
tubercles towards its centre ; mouth large and oval, with a narrow 
but deep sinus at the base; shell coloured by encircling lines of 
brown. In young shells the colour is a dull yellow with fine encir- 
cling striations. 
Purpura rudolfi (Lam.), persica (Linn.).—Also a large shell ; 
colour light to dark brown with encircling striations and darker raised 
bands, the upper ones being slightly noduled. The bands are blackish, 
interrupted with white oblong spots; mouth very large; outer lip 
serrate ; columella flattish and grooved towards the base. A good 
specimen would be three inches long. 
Purpura carinifera (Lam.).—Smaller than the last ; very common ; 
colour light yellow to grey ; chiefly distinguishable by a double row of 
sharp, upward-pointed tubercles round the upper and middle part of the 
last whorl; fine cancellated striations ; mouth orange-coloured in- 
side ; length, 12”; breadth, 12". 
Purpura sacellum (Lam.)—Shell slightly fusiform. The upper 
part of the last whorl and the spire bear a resemblance in outline to a 
pagoda, This last whorl has rows of sharp scaly ridges. Colour yellow 
to brown ; mouth, white ; length, 12". 
Purpura tissot: (Petit).—A small shell }” to 2" long, with a tallish 
spire, 4" to 5” broad encircling ridges on is el whorl with an inter- 
mediate narrow ridge ; ridges slightly tubercled and sometimes dark 
coloured, 
(See Mr. Melvill’s description and figuring of Purpura blanford?.) 
