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SOME NEW SPECIES OF AMMONITES. 



This species is rather rare. The fine specimen figured which 

 has the mouth-border, with the test preserved nearly perfect, 

 was collected by Mr. Monk from the Ambury quarry, Bradford 

 Abbas, Dorset, and kindly lent to be figured for this paper. I 

 also possess a smaller specimen from East Hill quarry, Brad- 

 ford Abbas, shewing the peculiar termination, of which a 

 diagram is given below. 



Position, zone of Harpoceras Sowerlyi. 



2. Diagram of Harpoccras JBcu-cri, showing the terminations. 



