NERVUS TERMINALIS IN REPTILE AND MAMMAL 



119 



Fig. 10 Emys lutaria, 20 mm. Three diagrams to illustrate the course of 

 the olfactory nerve and nervus terminalis. In A the nerves are projected on a 

 parasagittal plane, seen from the medial direction, B, a projection on the hori- 

 zontal plane, ventral part of olfactory nerve omitted, C, a diagrammatic trans- 

 verse section of the nasal sac. That part of the nasal sac to which the nervus 

 terminalis is distributed is believed to be the vomero-nasal organ. 



Fig. 11 Emys lutaria, 20 mm. Parasagittal section showing the dorsal root 

 of the olfactory nerve and the division of the formatio olfactoria into dorsal 

 and ventral portions. 



THE JOURNAL OF COMPARATIVE NEDROLOQY, VOL. 23, NO. 2 



