Jour. Coll. Asric. Vol. VIII. No. 3. 



|^°rsal I branches of cr 

 iVentral f blood-vesi 



Thunnus oricntaris 



T'riiiary bladder 



Dorsal branches of the cutaneous 

 blood-vessels 



Transverse commissure of the 

 cutaneous bluod-vessels 



Parathuhmis mehichi 



Bectum | 



Generative organ Urinary 



S. Kikkawa del. 



