Poikilopleuron pusillus.

Fig. 1. Side view of a dorsal vertebra.

Fig. 2. Under view of a dorsal vertebra.

Fig. 3. Vertical longitudinal section of the same.

Fig. 4. Side view of lumbar and sacral vertebræ.

Fig. 5. Side view of a caudal vertebra.

Fig. 6. End view of the same.

Fig. 7. Under view of the same.

Fig. 8. Vertical transverse section of the middle of the same.

Fig. 9. Abdominal hæmapophysis and hæmal spine.

Fig. 10. Under surface of abdominal hæmal spine.

Fig. 11. Reduced view, in outline, of neural or upper surface of the series of abdominal hæmapophyses and spines of a Crocodilus biporcatus.

Fig. 12. Side view of ungual phalanx.

Fig. 13. Upper view of the same.