MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES, VOL. X. 



PLATE XI. 



in/ill. 





m.l. 



M 



i 





% 



Pig. 54 



1 1. rill 



at. 



I.I. 



■ 



n/'.i: 



'l/'.r. 



Fly. 57. 





~1 



%»li*t* 



&.V. 

 Pig. 80. 





/•.//. 



Ii.c.iii. 



y '■'■ 

 at. 





p.o.l. 







Fig. 56 (ft) 



// ffih , 



:. . 



Pig. 56 (a) 



V 



p.r. 



b.c. 



t.lu: 



8Up.C. 



Fit'. 01 



Fig. 51). 



PHORONIS ARCHITECTA 



t.DlL 



