LIST OF PLATES. 



CEREBELLUM. 



Alligator. 



Anolius. 



Phrynosoma. 



Scotophis. 



Cistuda. 



Rana. 



Menopoma. 



Vert. Longit. Section. Magnified id Diameters. LXIII. 





ii. 



OPTIC LOBES. 



Heloderma. Vert. Trans. Section. Magnified 39 Diameters. LXX. 



Phrynosoma, " " " " 30 '' LXXI. 



Anolius. " " " " 41 " LXXII. 



Nerodia. " " " " 30 '' LXXIII. 



30 



LXXIV. 



