206 



TEXT-BOOK OF EMBRYOLOGY. 



, Crural nerve 



ilium \~" "| "" 



Pubic bone (cartilage) 



Obturator nerve 



Ischium 



Ischiadic nerve 



Fig. 184. — Cartilage of right side of pelvic girdle of a human embryo of 13.6 mm. 



(5 weeks). Petersen. 



The numerals indicate the vertebras; the first sacral being opposite the ilium. 



r>^ 



Iliu 



Crural nerve 



Pubic bone (cartilage) 



Obturator nerve 

 Ischium 



Ischiadic nerve 



Fig. 185. — Cartilage of right side of pelvic girdle of a human embryo of 18.5 mm. 



(8 weeks), Petersen. 



The numerals indicate the vertebras; the first and second sacral being opposite the ilium. 



Compare with Fig. 184. 



