PLATE XXXL 
Zone of Aegoceras Henleyi. 
rig. 1. Aegoceras Davcei, Soioefhy. Lateral view, natural size. Woodwardian 
Museum, Cambridge. Leckenby collection. 
2. — — — Siphonal area, natural size, of the same shell. 
3. — cuRVicoRNUM, Schloenbcicli. Siphonal area, natural size. My 
collection. 
4. — — — Lateral view, natural size, same shell. 
Zone of Aegoceras Jamesoni. 
5. — Taylori, Sowerhy. Lateral view, natural size. Lyme Regis. In 
my collection. 
6. — — — Siphonal area, showing the double row of 
tubercles on this area. 
7. — — — Front view of the same shell. 
