342 CLASSIFICATION OP FISHES^ ETC. 



Order III. URODELA. 



Body longj slender ; feet always four ; tail long, per- 

 manent, "vvith external branchia in the young, and cel- 

 lular lungs in the adult state. 



Salamaxdrina Savi. General structure of Salaman- 



dra, but there are only four toes upon all the feet. 



S. perspicillata Sav. 



Salamandra. Terrestrial Salamanders. Four toes on 

 the anterior, and five upon the hinder feet; head 

 flattened ; tail rounded ; aquatic in their tadpole or 

 larva state, but terrestrial in the adult. 

 S. maculosa. Lac. ii. pi. 30. 



Tritonella Sw.* Aquatic Salamanders. Toes as in 

 Salamandra ; but the tail is much compressed^ and 

 surrounded by a narrow fin. 



T. Gesneri Laur. 



MoLGE Merrem, Gray. Toes long and free ; skin and 

 parotoids smooth, minutely punctured ; lateral line 

 none. 

 Al. glutiiiosa Gray, ( Salamandra glutinosa Green. ) 



Order IV. ABRANCHIA. 



Aquatic ; body long ; feet four ; respire by lungs only ; 

 branchial none ; cranium solid ; no metamorphoses 

 known. 



Mexopoma Harlan. General form of a salamander ; 

 body sub-cylindrical ; taU compressed ; eyes very 

 small ; legs rather strong ; toes four, five ; feet ex- 

 ternally fringed. 



M. gigantea. Griff. Cuv. p. 410. 



AiiPHiuiiA Garden. Body excessively lengthened; legs 



* As the name of Triton has long been given to a well-known genus of 

 shells J perhaps Tritonella may serve our turn on this occasion. 



