﻿AND 



PLATE XVI! 



S.456.X5. 



S 452X2. 



Jim 





S.395.X2. 



TRANSVERSE SECTIONS THROUGH ARMOR OF THREE AMERICAN SPECIES OF CYCADEOIDEAE. 

 1, 2. CYCADEOIDEA NIGRA. 3. CYCADELLA SP. 4. CYCADEOIDEA WIELANDI. 



