Figures. 
t 
1 
| 
| | 
| | 
‘ 
6 
9.4 (read 10); 
| ji 
| 
L At pl 
The same ; 
‘a ra alll, 
, 
Riek, W. K. PARKER ON THE SKULL 
PLATE 3. 
Tatusia Aybrida (1st stage); embryo: 
of a series of vertically-transverse, 
sections . 
| The same; 2nd section . 
| The sanie; 3rd section . 
The saroe; 4th seetion 
The same: 
The same; 
5th section 
6th section . 
7th section . 
The same; 8th section. . 
The same; part of 9th section 
10th section 
{1th section 
12th section 
The same ; 
The same ; 
The same; 
The same; part of 17th section (Plate 4, len 5) eae 125 
IN THE MAMMALIA. 
12 inch long; 1st | 
thin, transparent | 
24 
| 
| 24 
