BATRACHIA. ll 
Order ITI. PsEvpoPHmpra. 
Internal nostrils in palate. Body subcylindrical. Legs 
none. Scales minute, embedded. 
Order IV. PsrupoIcHTHYAS. 
Internal nostrils in the inner edge of upper lip. Body 
compressed. Legs four, rudimentary. Scales large. 
A, Trironss. — The nostrils enclosed in a bony case ; the internal 
nostrils opening on the sides of the middle of the palate. 
Orper I. BATRACHIA. 
Skull formed of separate bones. 
Nostrils enclosed in a bony case; the internal nostrils opening on 
the sides of the middle of the palate. 
Gills of the young (and rarely of the adult animals) well developed 
and exposed. 
Skin naked, smooth. 
Body of young elongate. 
Tail often deciduous. 
Legs four, rarely only two. 
Batraciens Brongniart, Bull. Soc. Philom. 1799; Duméril, Zool. 
Anal. 1806. 
Batrachia Rajfin. Anal. Nat. 74. 1815. 
Batrachia and Hemibatrachia Pitz. Syst. Rept. 30. 38. 
Amphibia Caducibranches Latr. Fam. Nat. 1823. 
Divide into two Suborders thus : — 
Suborder I. S4LrenTIA. 
Body short, depressed, without any tail. 
Suborder II. GRADIENTIA. 
Body elongate, tapering, tailed. 
The details of the first Suborder are given in Part I. 
A 6 
