I 5° 
Of Shells. 
ART 
I. 
I have feen fome of thefe Shells perfectly formed in all 
their parts, not much bigger than a Cbeefe-Mite. 
Thus far the Titles and Defcriptions 3 the Schemes fol- 
low, which take in all, fave one or two of the Sub-Species : 
and wherein the Order is a little more corrected. 
Scheme 1. 
Shells 
are 
Not Whirled. Scheme 2. 
^Conick. Scheme 3, 
"Single^ /Apparent, CBody 
Whirled. Jwith more c £ Oval. Scheme 4. 
TheWhirleS ^Whirle. Scheme 5. 
(Latent. Scheme 6. 
cDouble. "9 
'XNot Single. < ^Scheme 7. 
t Multiple.^ 
Scheme 2. 
r J White } Button-Fifli, or 
cThe Greater \ Red Edible Sea-Ur- 
- Five Orders^ C White I chans. 
kof Prickles cThe Lefler< Brown ^Echini ef- 
.Orbicular,< f' Green (1 culenti. 
i-h little 
open 
with 
JTen Orders 
of Prickles. 
II 
Not whirled^ 
Q va l CThe Greater. The Great Mare-Maids-Head, Ecbinometra. 
"^TheLeffer.The Little Mare-Maids Head.Echinus Spatagusi 
r Low. 
r Level, . \ 
or plain-fided jHigh or 
Wide open ^ 
jnign or V. Level. 
CConick. With < 
the edge £Nbt level. 
/"Equal or /* Waves, 
fProminentA even, \ > Limpets. 
Oval. With I with fides )Uneven.} deep Patells. 
t the Navle. } ( With (Furrows. [ 
(Only a little 
"vWindingJ obliquely. The Vaulted 
jLimfeUV nulla, concamrata. 
(.Spirally. Auris marina. _ 
Scheme 5. 
