﻿BRITISH FOSSIL CEPHALOPODA. 



Plate XIX. 



Fig. 



1. Cyrtoceras son ax. — From the Bala Beds, Rhiwlas. In the Museum of Prac- 



tical Geology. Salter's type, a, outline of the radial section . 



2. Ibid. — From the same locality and collection. A younger example. Salter's 



type of C. ATRAMENTARIUM. 



3. Ibid. — From the Bala Beds, Sholeshook. In the Museum of Practical 



Geology. The body-chamber and aperture. 



4. Orthoceras Barrandei. — From the Wenlock Shale, Ledbury. In the collec- 



tion of Dr. Grindrod. Side view. 4a, front view. 



5. Cyrtoceras macrum.— From the Wenlock Limestone, Dudley. In the British 



Museum. 



6. Cyrtoceras isca. — From the Wenlock Limestone, Garcoed, Usk. In the 



Museum of Practical Geology. Showing the surface. 



7. Ibid. — From the same locality and collection. 



8. Cyrtoceras corniculum. — From the Wenlock Limestone, Dudley. In the 



Woodwardian Museum, a, outline of the radial section. 



9. Cyrtoceras contrarium. — From the Wenlock Shale, Usk. In the Museum of 



the Cardiff Naturalists' Society. 

 10. Ibid. — From the same locality. In the Museum of Practical Geology. 



