430 EMBRYOLOGY OF THE LOWER VERTEBRATES CH. 



T 



c.d 



B 



Kio. 19^. Stages in tin- <l-\.-lc,|.iiifiit ol /'..//////,//.-.. (All i-M-i-pt A 



l.y 



.hawings 



' ' . D K, 88; F, 86; -. hn.-i ::" ii:m. in l,.ir.-th. . anus .,.,,.,.,. ..... ,,t 



organ ; E, y; t.g, xtrnul K'll ; op, ..|-ivnliiin ; r .j, p.-.-toiul MM ; //, y ( ^lk. (A-K x 11 ; F x 8.) 



