PELVIC ARCH 



113 



FIG. 91. PELVIS OF VARIOUS AMPHIBIA. A, Xenopus (Dactylethra), from below ; 

 B, the same from the front ; C, Rana esculenta, from the right side ; D and 

 E, Salamandra atra ; F and G, Salamandra macutoxa ; H, Branchiosanrus ; 

 I, Discosaurus. D-I, from the ventral side. (Figs. H and I after Credner. ) 



/, ilium ; Is, ischium ; P, pubis (P 1 in Rana, pubic end of ilium) ; IP, fused isehio- 

 pubic ossification ; PP, prepubis ; Cep, epipubic cartilage ; Fo l , obturator 

 foramen ; 7 1 (in Xenopus), the proximal end of the ilium, which is separated 

 from its fellow and from the pubis by a + -shaped zone of cartilage,!, * ; Ac, 

 acetabulum. 



