PAPERS ON BIOLOGY AND AGRICULTURE 



129 



Fig. 9. Lateral view of model of nasal capsule of Natrix cyclopion, 

 75 mm. X58. 



Fig. 10. Cross section through tectum nasale of Natrix cyclopion, 

 75 mm. X35. 



Fig. 11. Cross section through vomeronasal capsule of Natrix cyclo- 

 pion, 75 mm. X35. 



Fig. 12. Cross section through nasal concha of Natrix cyclopion, 

 75 mm. X35. 



