MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES, VOL. X 



PLATE XIV 



tl.rt . 



Fig. 69. 



Fig. 70. 



Fig. 71. 



Ba v.n. 



Fig. 72. 



In /. n. 



In/, n. 



Vig. 7:t. 



I ut. ii. 



Fig. 74. 



PHORONIS ARCHITECTA 





