Of SMIL 
Part I. 
abundance of a fort of Fucus, which the Italians call Roc- 
cella, wherewith Silk^Dyers do now make very rich Purples 
OOFab.Co- of all varieties, with lefs labour and charge, (a) 
That little Shell called Blatta Byxantia, is the Operculum 
or Lid of the Purple. 
The SQUARE- WILK. Buccina Rhomboidea, i. e. It hath 
in a fort four equal fides, with unequal Angles. I find 
it not defcnb'd. The Mouth almoft Oval, both the 
Corners a little gutter d. The right Lip is firft turned out- 
ward, and then doubled or returned back again inward 5 
and the edge a little toothed. Juft oppofite to this Lip, 
is laid upon the fhell a kind of lift, and doubled down in 
the fame manner. Upon every Round of the Turban alfo 
are certain edged pieces in two oppofite Rows. By thefe 
and the lift above faid the (hell is made fquare. Both the 
main Body and the Turban are wrought over with 
knobs great and fmall ftanding in oblique and fpiral 
Orders. 
All WILKS that have the Rounds of the Turban thus 
edged, are betwixt a Purple and a common Wilk. 
The LONG SQUARE WILK. Neither do I find this 
defcribed or figur'd. Both the doubling of the right Lip, 
and the oppofite Lift, are lefs clofe, than in the former. 
Neither hath it any of the larger knobs. 
The LONG THICK-LIFD WILK. The right Lip 
of this is fwoln or ftands thick outwardly 3 and on the 
Rounds of the Turban are many edged pieces. 
The fame fort of WILK, with few edged pieces on the 
Turban. 
The THIN-LIP'D WILK. The fore Corner of this 
ends in a gutter d-Horn. Columna defcribes and pictures 
(b) Lib. de it with the Name of Bucciunm Roftratum. (b) 
Aquatii. & The GREAT THIN-LIP'D WILK. S trombus magnus. 
This fort hath edged pieces on the Rounds of the Turban. 
The biggeft of turbinated-fhells : this here is almoft * a yard 
long, and above ? a yard round about. 
The TRIANGULAR WILK. No where defcrib'd that 
I find. The Mouth almoft Oval. The fore Corner hereof 
ends in a gutter d-Horn bended a little upward. The left 
Lip only turned outward. The right is firft bended out- 
ward, and then doubled or returned inward. From thence 
at 
