240 
The Natural Hiftoryof JAMAICA. 
Thefe are much the fame only more ftriated than the former, and 
the Clavicle generally more raifed or extant and prominent, 
IV. Eade ore magis patuloe freto Magellanico. List, Hift. Couchyl. ‘iad. 
iz) INO. 29. 
This differs only in having the Mouth wider, and being in Colour 
fomewhat darker. Mr. Hanayfide gave me feveral of thefe which he found 
in the Streights of Magellaz. 
V. Trochus maximus, levis, ex nigro maculatus, List. Hist. Conchyl. Tab. 
640. No. 30. Trochus Barbadenfis magnus ex albo nigroque undatus. Pet, 
Mul. p. 88. No. 845. Gaz. Nat. Tab.70. Fig.9. The large Barbadoes 
Magpie Top-fhell. Mem. cur. Aun, 1708. p. 126. No. 21. Cochlea umbi- 
licata, Bonaa, p.117. Fig. 29, 30, Muf. Kircher. p. 451. N°: 29, 30. Trochus 
Jamatcenfis minor alte umbilicatus. Pet. Mem. cur. Ann. 1708. iO 126. 
No. 22. An Trochus Famaicenfis minor, marmoratws, ore quali aenticulato. Ej. 
ib. No. 23. 
This Shell ts three Inches diameter at the round Bafe, whence, 
by about fix Circumvolutions ic ends pyramidally in an Apex which 
is two Inches high, It is umbilicated by the round Mouth by a Hole 
which feems to be continued tothe Apex, like the Well of a Stair-cafe. 
It is very folid and ponderous, fmooth, within white and  fhining, 
as if filver’d over. “The outfide is of the fame fhining Colour, under 
a Cruftor outward skin’d marbled, or variegated with white and black 
Spots and Streaks. : 
Thefe are common in the Seas of Famaica, and are eaten by fome 
People, being of various Sizes. They are alfo found in the Seas near 
Barbadoes, Nieves, the River Mifiifipi and the Bahama Iflands. 
VI. Trochus minimus flriatus, albiaus. 
This is not over a quarter of an Inch in diameter, and about as high 
from the round Bafe to the Vertex. *Yis all whitifh and ftriated by {mall 
Ridges and Furrows, for the whole Du& or Courfe of the Vo/ute which 
end pyramidally in a Point. 
I found it on the Shoars of Jamaica. 
VII. Trochus parvus, flriatus, undatim ex fufco denfe radiatus. Lift. Hift. 
Conchyl. Tab. 641. No. 31. Trochas crebris striis fufcis & tranfverfe & 
undatim difpofites donatus. Lift. Hift. Animal. Angl. 166, Tit. 15. 
I found this on the Shoars of famaica, and could obferve no Difte- 
rence init from that met with on the Coafts of England, Scotland and 
Nova Zembla, from all which Places I have had it brought me, 
VIL. Trochus plaxior pyramidalis, firiatus, muricibus radiatim ad maroi 
: z gh Sg 
nem. Lift. Hirt. Conchyl. Tab.622. & 62 3- No. g. Trochus finnofus, orbt- 
He ie muricatis, e Miffifipt. Pet. Mem. cur. Ann. 1708. p» 128. No. 19. 
N°. 366, pile Bonan, 9.165. N° 366, 367. Muf: Karcher, p+ 437- 
The 
