70 



CHORDATE ANATOMY 



SPINAL CORD 



SPINAL 

 GANGLION^.. 



NEPHROSTOME j 

 GLOMERULUS 

 POSTCARDINAL VEIN 



■ , ^^ 1 MESONEPHRIC TUBULES 



PERITONEUM \// 

 MESENTERY PRONEPHRIC TUBULES 



PRIMITIVE DUCT 



Fig. 62. — Stereogram of the developing pronephros and mesonephros. (After Kingsley 



modified.) 



MESONEPHRIC TUBULE 



t lYOTOM^ 

 DERMATOME 



MESONEPHRIC TUBULES 

 ^EURAL TUBE j 



', Gl Of 1ERULUS NEPHROSTOME 

 PERITONEUM POSTCARDINAL VEIN 



I GENfTALRIDGE i PRIMITIVE DUCT 



MESENTERY COELOM 



Fig. 63. — Stereogram of the developing mesonephros; stage later than that of Fig. 62. 

 (After Kingsley modified.) 



