The Hiftory of ANIMAL S, * * 149 
which trafverfe them : on the furface of the body of the fhell there fland almofl in** 
numerable fpines j they are very fmall, and refemble fegments of briflles of fome ani¬ 
mal : the colour of the whole fhell is a dulky, greyifh, white, and the lining of 
the mouth is white. 
The other fpecies of the Purpura are, 1. The fpinofe Purpura, with a flefh-coloured 
mouth, and three rows of fine fpines. 2. The yellow Purpura, with three rows of 
large fpines. 3. The whitifh Purpura, with three feries of very broad and deeply 
jagged fpines. 4. The furrowed Purpura, with yellow variegations, and with three 
feries of fhort, broad, and ragged fpines. 5. The large Purpura, with five rows of 
very broad fpines laciniated and expanded at their extremities, like the feet of a frog 9 
6. The Purpura, with fix feries of fhort and fomewhat obtufe fpines. 7. The Pur¬ 
pura, with fix feries of foliaceous fpines deeply laciniated, and with the edges of the 
fegments curled. 8. The leffer, prickly Purpura, with three rows of robufl, but not 
very fharp, fpines. 9. The leffer, rough Purpura, with five rows of low fpines. iO„ 
The Purpura, with a long clavicle and long fnout, and with feveral feries of obtufe 
tubercles. 11. The long-fnouted, fmooth Purpura, covered only with low, rounded 
prominences. 12. The little-fpotted, tuberculofe, moderately long-fnouted Purpufa*- 
13. The little, moderately long-fnouted Purpura, with low tubercles. 14. The thick, 
collated Purpura, with yellow variegations, and a crooked beak. 15. The marbled, 
collated, and tuberculofe Purpura, with very elegant amethyfline lines on the body. 
16. The elegantly variegated, collated, and marbled Purpura, with prickly protube¬ 
rances. 17. The flraight-beaked, grey Purpura, with three feries of capillaceous 
fpines. 18. The crooked-beaked Purpura, with fetofe fimbriae. 19. The fhort- 
beaked Purpura, with a depreffed clavicle, and the body armed with fharp fpines, 
20. The briltly Purpura, called the fea Porcupine by fome writers. 21. The elegant 
purple and white Purpura, called by many the Porphyries, or Porphyry-fhell, 
D O L I U M, 
T H E Dolium is a fimple fhell without any hinge, formed of one continuous 
piece, which makes a body of a figure approaching to round, diflended, and, as 
it were, inflated : from the refemblance of the body of this fhell to a veflel for the 
containing fluids, the genus has been named Dolium ; others have called them Con¬ 
chas globolas; but this is lefs determinate, as they are many of them of an oblong, not 
a rounded, figure. The animal inhabiting this fhell is a limax. 
Some of thefe have the mouth dentated, others fmooth $ and in fome the clavicle is 
moderately long, though in moll it is depreffed. v .~ 
Dolium fubovatum fpiraliter coftatum . 
The fubovate Dolium , with fpiral ribs . 
This is a very elegant (hell: it is about two inches and a half long, and nearly as 
much in diameter in the largelf part: the clavicle is oblong, and pointed at the extre¬ 
mity, and is in fuch a manner continued from the body of the fhell, that it is not eafy 
to fay where it begins 5 the other extremity of the fhell is formed into a fhort roUtum, 
which turns a little up : the whole fhell is tumid, and inflated, as it were, and large!! near 
the head, and it’s whole furface is covered with a number of elevated ribs, of the breadth 
of a ftraw, feparated only by fpaces of about the fame diameter: the ribs are yellow- 
ilh, and the fpaces between them whiter, and both are fpotted irregularly with a 
deeper yellow. 
It is found on the fhores of many parts of the Eaf! Indies, and has been fometimes 
alfo brought from America. i 
Dolium fubovatum Leve y eleganter variegatum. 
The fmooth , fubovate Dolium> with elegant variegations . 
This is about two inches and a half in length, and near two inches in diameter, 
and is a thin fhell, feemingly inflated : the clavicle is moderately long, and has four 
volutions; thefe are thick, inflated, or rounded, and the loweft of them is feparated 
from the body of the fhell by a hollow line j the other extremity of the fhell ter mi- 
Q ji nates 
