1 66 



SE LA CHI I 



greatly enlarged and transversely elongated. They form a mosaic of 

 closely fitting blocks of vasodentine. 



DorsalMew of, A, Raja davata, L. ; B, Myliobatis aquila, I..; C, Cepha ae, Lac. 



(After Day.) a.d, anterior dorsal fin : a.pv, anterior lobe of pelvic tin ; ce, " cephalic " fin ; c.f, 

 caudal tin ; d, clasper ; d, patch of large denticles ; p.d, posterior dorsal fin : ;>./, pectoral tin ; 

 pr. pelvic tin ; s, spine ; sp, spiracle. 



Fig. 130. 

 Jaws and teeth of the Eagle-Ray, Mylio . L. (After Owen.) 



Myliobatis, Gxiv., and Aeobatis, M. and H., warm seas ; to Eocene, 

 Europe and N. America. Pramyliobatis, Jaekel ; Eocene, Italy. 



Sub-Family 2. Dicerobatinae. With paired cephalic-fin processes. 

 The teeth, which are closely set in many rows, may be small and almost 



