PLATE XLI. 



Zone of Aegoceras Henleyi. 



Fig. 1. Aegoceras Bechei, Sowerby. Side view, natural size. My collection. 



a Front view of the same specimen. 



3 Side view of a smaller shell, showing sculpture. 



a Siphonal area of the same fossil. 



5 _ Lobe-line, showing the extremely ramified lobes 



and saddles of this Ammonite. 



