PLATE XLI. 



Zone of Aegoceras Henleyi. 



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



2. — — Front view of the same specimen. 



3. — — — Side view of a smaller shell, showing sculpture. 



4. — — — Siphonal area of the same fossil. 



5. — — — Lobe-line, showing the extremely ramified lobes 



and saddles of this Ammonite. 



