MR. W. K. PARKER ON THE SKULL IN THE B ATRAC HI A. 
PLATE 18. 
Eigures. 
Number of 
times 
magnified. 
1 (p. 97) 
Skull of Pleurodema Bibronii —Adult female; If inch 
long. Chili. Upper view. 
ft A 
°3 
2 
The same. Lower view.. 
6f 
3 
The same. Mandible and hyo-branchials- (half). Upper 
view ... 
6f 
4 
The same. Columella and stapes. Outer view .... 
13f 
5 (p. 99) 
Skull of Lymnodynastes tasmaniensis. —Adult female; 
if inch long. Tasmania. Upper view. 
6f 
6 
The same. Lower view.. 
6| 
7 
The same. Mandible and hyo-branchials (half). Upper 
view. 
ft 2 
°3 
8 
Auditory region of the same, with stapes and columella. 
Outer view. 
13f 
