200 



THE FROG. 



myotomes, and very probably correspond to the ribs of other 

 Vertebrates. 



The urostyle is the hindmost part of the axial skeleton, which 



Willi 



HW iS "" J3 »" 



» *ia'l3| 



be H=M£q5' = . * 

 ^ .■§ .53 W = 



&laffi * 



.a l^lffi 



■Sis 8 1 5 « 



■I 3^ =•!!'«> 



a< .+3 



CD .-?■£- 



O O^ - jr.? 



-i c •„ ." .s r< r- 



H *g a 5 g ^ I 



o* ^CQ S 2 



- u 





° 0«, 



I Attic .& EP 



ci Eft 



CO 



e 1*1.! .** 



If itf 



does not become segmented into vertebras. The cartilage of the 

 urostyle forms a continuous tube in front, surrounding the noto- 



