MR, W. K, PARKER ON THE § 
PLATE 17. 
ee rf 
Number of pi, 
times) | 
magnified, | — 
peer teeters | tennant oe aetna seroma cere enn erm rreme | ee ee fe el 
1 | Arinaceus europuus (ist stage); embryo, 14 inch long; 
| endocranium ; lower view . 
The same; upper view. . . 
Brinaceus evroprus es stage); ripe young, 2 ae 
long ; dissected skull; lowar view . 
The same; upper wiew , 
The same; side view 
The same; end view 
| The same; section 
The same; part of basal view, w a ee nals peor 
