REDESCRIPTION OF THE CHINESE WHITE DOLPHIN 
Measurement of the tympanoperiotic bones of the neotype. 
Measurement 
Length of tympanic bulla, from anterior tip to posterior end of outer posterior prominence 
Anterior tip to posterior end of inner prominence 
Postero-ventral tip of outer posterior prominence to tip of sigmoid process 
Postero-ventral tip of outer posterior prominence to tip of conical process 
Width of tympanic bulla, at the level of the sigmoid process 
Height of tympanic bulla, from tip of sigmoid process to ventral keel 
Width across inner and outer posterior prominences 
Greater depth of interprominental notch 
Width of upper border of sigmoid process 
Width of the posterior branch of lower tympanic aperture 
The thicker side between outer and inner posterior prominences 
Length of periotic, from tip of anterior process to posterior end of posterior process, measured on a straight line parallel 
with cerebral border 
Thickness of superior process at the level of upper tympanic aperature 
Width of periotic across cochlear portion and superior process, at the level of upper tympanic aperture 
Least distance between the margins of the fundus of the internal auditory meatus and of the aperature of ductus endolymphaticus 
Least distance between the margins of the fundus of the internal auditory meatus and of the aperture of aquaductus cochleae 
Length of articular facet of the posterior process of periotic for the posterior process of tympanic bulla 
Antero-posterior diameter of cochlear portion 
Maximum depth of inner part of involvucrum 
Sil 
Neotype 
Right 
34.3 
B32 
24.6 
18.0 
2-3 
25.0 
18.3 
4.7 
5.0 
1.2 
10.5 
31.9 
13.0 
22.2 
2.4 
4.2 
15.9 
19.0 
9.1 
