FROGS AND TOADS. 63 



Order II. — URODELA . . . Family Amphiumidce. 



(Salamanders and Newts.) „ Salamandridce. 



„ FroteidcB. 



„ Siren id(B. 



„ III.— APODA ... „ Cmiliidce. 



(Ccecilians.) 



„ IV.— STEaOCEPHALA . „ Lahyrinthodontida, etc. 



{Extinct.) 



Order I.— ANURA. 



Feogs and Toads. 



The members of this order are sufficiently characterised by the 

 fact that in the fully adult condition the tail is completely absent, 



Fig. 62. 



The Common Frog (Rana temporana) . (No. 442-) 



in addition to which may, however, be mentioned the peculiar but 

 well-known form of the body, and the more or less marked elonga- 

 tion of the hind limbs. In the skeleton the spinal column is very 

 short, and terminates posteriorly in a long spine from behind the point 

 where the pelvis is articulated to the transverse processes of the several 



