﻿BRITISH FOSSIL CEPHALOPODA. 



Plate XXII. 



1 . Gomphoceras ellipticum. — From the Lower Ludlow, Leintwardine. Sowerby's 



type. In the Museum of the Geological Society. Seen from the ventral side. 

 a, reduced view of the front, showing the transverse shape and the aperture. 



2. Gomphoceras pyriporme. — From the Lower Ludlow, Leintwardine. In the 



Museum of Practical Geology, a, the outline of one-half the aperture. 



3. Gomphoceras obovatum.— From the Lower Ludlow, Ludlow. In the Ludlow 



Museum, a, front view, showing the aperture. 



4. Gomphoceras ellipticum. — Outline of section, with position of siphuncle 



(position reversed from fig. 1). From an example from the Lower Ludlow 

 of Herefordshire. In the British Museum. 



5. Gomphoceras eta. — From the Lower Ludlow, Mocktree. In the British 



Museum, a, front view, showing the aperture. 



