DEVELOPMENT OF THE ELASMOBRANCH LIVEH, 



RICHARD E. SCAMMON 



PLATli; 2 



L.hrn. o. 



M.hep.j 



39 



r^- 



M.hep. p 



Uhep.p. .^_^| 



Y.s, 



40 



395 



THE AMERICAN JOURNAL OF ANATOMY, VOL. 14, NO. 3 



