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OJlracites^ petrified Sea Shells of the 

 bivalve Kind, being plain and common 

 Oyfters of various Sizes fome arc found 

 fingle, or only a Pair of Shells ; others in 

 Cluflers, being a great Number of Shells 

 hrmly united and cemented together. A 

 particular Kind of Oftracites^ with longitu- 

 dinal Strue^ are found in the Rocks at 

 Emsford in Stafford/hire. 

 • Anomue. Concha Anomide^ are a Sort of 

 bivalve Shell ; the Valves of which are of 

 %mequal Extent, both of them convex, 

 and the Head or Beak of the longer Valve 

 crooked, and falling over the Head of the 

 other s they are commonly called beaked 

 Cockles. No Name has been given to 

 the Fifh that inhabits it \ for the recent 

 Shells of this Kind are fo very rare that 

 there is fcarcely one to be found perfefb. 

 They are perhaps, as well as that which 

 has given its Form to the Cornu Ammonis^ 

 Inhabitants of the deepeft Parts of the 

 Ocean ^ confequently it muH be fome ex- 

 traordinary Agitation of that great Body 



of 



