PLATE XXIV. 



PAGE. 



Fig. 1. Receptaculites formosus 500 



Side view of specimen, natural size. 



Fig. 2. Eucalyptockixus (sp. undet.) 



2- View of the summit from a natural cast in magnesian limestone. 



2 a. Side view of the same specimen. 



Fig. 3. Illenx's (Bumastus), sp. undet ... 



Fig. 4. SPHiEREXOCBUS ROMIXGERI 510 



4 . Glabella seen from above ; 4 a, side view of the same. 



Fig. 5. Stricklandtkia deformis 502 



5. View of ventral valve ; 5 a, viow of dorsal valve. 

 5 &. Profile view of the same. 



Fig. 6. Phragmoceras Byronensis 506 



Side view of a nearly entire internal cast. 



Fig. 8. Ortrocekas angulatum 504 



8. View of specimen showing the surface markings. 

 8 a. Section showing the position of the siphuncle. 



