160 ON THE SKELETON OF THE CHINESE WHITE DOLPHIN. 
PLATE XVIII. 
Fig. 1. Inferior surface of the cranium of the same: half the natural size. 
vo. vomer. pl. palatine. _—pt. pterygoid. ty. tympanic. 
Fig. 2. Anterior surface of the conjoined atlas and axis. 
Fig. 3. Anterior surface of the third cervical vertebra. 
Fig. 4. Anterior surface of the fourth cervical vertebra. 
Fig. 5. Anterior surface of the fifth cervical vertebra. 
Fig. 6. Anterior surface of the sixth cervical vertebra. 
Fig. 7. Anterior surface of the seventh cervical vertebra. 
All half the natural size. 
