[ % ] 
the ribbed Mufick Shell, the brown Murex with 
many Spines, the Turban, the Helmet, a Variety 
of yellow Shells, and many Spider Shells: The 
Filli that inhabits this Kind of Shell, furnilhed 
the ancient Greeks and Romans with that curious 
Dye, which was in fuch high Eftimation among 
them. We muft now conduct the Reader to the 
other Table, which contains the Remainder of the 
Shells. 
Purpura. This Kind of Shell is jagged, and 
befet all over with Tubercles, Spines, Umbo’s or 
Stride •, the Mouth or Aperture is fmall, and ap¬ 
proaching to a circular Figure ; the Tail is fnort, 
and the Bafe ufually runs out into a long Beak : 
This is a very beautiful Species. Among the Spe¬ 
cimens are the Woodcock Shell, the thorny or 
prickly Woodcock, the bindive Shell, the Caltrop 
Shell, and many others. The Spines of the Pur- 
purse differ, being more or lefs lharp, and in Num¬ 
ber various ; both this Kind and the Murex are 
found in great Plenty in the Gulph of Parentum. 
Doha, Tun Shells. Thefe have a glohofe or 
round Belly, a lax Aperture, or Mouth fometimes 
fmooth, at others dencated ; the Clavicle is either 
very little umbonated or deprefled* the Columella 
in fome Species fmooth, in others wrinkled ; and 
the outward Surface is always variously falcated, 
therein differing from the Bulla. Among the Spe¬ 
cimens, thofe moft worthy Notice are the Ethio¬ 
pian Crown, the feveral Kinds of harp Shells, the 
variegated ribbed Tun Shell, fome Perfian Shells, 
and many others, which it would take up too 
much Room particularly to mention. 
Bulla , Boat Shells. They are a Kind of Dalia, 
but differ from them in that their Surface is fmooth, 
whereas the Delia are always fulcgted; the fpiral 
E 3 Volution^ 
