AMPHIBIA. 



AMPHIBIA. 



170 



suspended by a ligament. It is cylindrical, and widens a little on 

 arriving at the cotylo'id cavity. The pubia and ischium are soldered 



Skull of Mrnopoina ; a, in profile; 6, from above ; c, from below. 



Skull of Sieboldia, seen from below. 



together, and form, with those of the other side, from which they are 

 distinct, a large disk, concave above, flat below, cut square in front 

 and at the anterior parts of the sides, notched laterally and narrowed 

 behind the cotylo'id fossa;, and terminated backwards in a concave arch. 



Fore-h:md of Sicbofrfin, 



Skeleton of Terrestrial Salamander, a, Skull in profile ; J, from below. 

 The pubis remains cartilaginous much longer than the ischium, with 

 which it is united by a suture which makes a cross with the symphysis, 

 and in front of this symphysis is a cartilage in the form of a Y in the 

 muscles, which recalls to the observer the marsupial bones of the 



