25,8 
— 
The Natural Hifloryof JAM AIC A. 
This Shell-fith is found on the Shores of Famaica, as alfo on thofe of 
Barbados and feveral Places of the Mediterranean, all which Shells, by 
what I can obferve, differ very little in any thing one from anot her. 
X. Pectunculus denfe ftriatas margine fere inequali & finuofa. List. Hift. 
Conchyl. Tab. 229. N° 64. Tab. 241. Fag. 17. 
This is, as to Hingeand Shape, exactly like the former, only more 
round and fpherical, being about an Inch in Diameter. Tis often cover’d 
with the Sediment of the Sea and hath frequently Tubalt Vermium, 
Oyfters, cc. fticking to it. It hath an Opening or Hole towards the 
Edges rendring each Valve finuous. 
I found it among the Corals, Spunges, cc. in the Bottom of the Seas 
adjoining to ‘famatca. 
XI. Pectunculus polyginglymus, albus, ovalis. Pectunculus denfe c profunde 
firiatus ovali Figura. Lit. Hift. Conchyl. Tab. 237. N°° 71. 
This is the fame with the Precedent only the Cardo or Hinge which is 
very long and tooth’d, is not ftreight but oval, asis the Figure of the 
whole Shell, which is much lefs than the foregoing. 
I brought it fromFamasca, and have had it fent from theBay of Campeche. 
XII. Pectunculus minor, polyginglymus, albus, laevis, vertice ad latus diftorto, 
intus argenteus, [plendens. 
This is not over halfan Inch long from Corner to Corner on the fide of 
the Shell oppofite to the Cardo or Hinge which is a little diftorted to one 
fide. It is above a quarter ofan Inch from the Cardo to the oppofite Part of 
the Circumference, fmooth and white. It is deep and the infide of a 
fhining white Colour, asif cover’d over with Leaf Silver. It hath ma- 
ny Teeth for about one third of the Circumference of the Shell at the 
Hinge. 
I ee it in Jamaica. 
XIII. Petunculus albus, muricatus, cardine ad latus diftorto. 
This fingle Valve which was theonly one I had from “famaica, or 
ever faw, was three quarters of an Inch long, very near as broad. to- 
wards the Circumference oppofite to the Cardo. It wasall white, almoft 
triangular, with a great many extant Ribs, with Furrows between, drawn 
or running from the Cardo to the Circumference. The Rib in the mid- 
die was muricated and made it look asif it were triangular. The Vertex 
was a little diftorted to one Side. 
I had it from Jamaica. 
XIV. Pectunculus e fufco rufefcens admodum denfe ftriatus. Lift. Hift. 
Conchyl. Tab. 231.N°%: 65. of ef sf fir 4L4$ ift ift 
_ This isleffer in every Part than the above defcrib’d,otherways very like 
it, fo that I am doubtful if ic differs materially from it, and fufpect ic may 
only be a Variety, and both are fo like the Mafculus Math. that there are 
fome Reatons to believe they may be all three the fame. 
I found it in Fameica on the Shores, é&c. and have had it fromthe 
Mediterranean. 
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