64 CATALOGUE OF AMPHIBIA. 
A. manentibranchia Hogg, Ann. and Mag. N. H. 1841, 362. 
Proteides Tschudi, Batr. 1828, 26. 
Phanerobranchidee Fitz. ; Holbrook, N. A. Herp. 101. | 
Achthyoidei Hichw. Zool. ‘Spee. iii. 163. _ 
Ichthyodi (part.) Bonap. Amph. Eur. 11. 1839. . 
Amphibiens ou Proteus ou Sirens Blainv. Bull. Soe. Philom. 
1816, 119. 
Subichthiens Blainv. Org. Anim. t. 5. 1822. 
Ichthyodea branchiata Fitz. Syst. R. 35. 
-Perennibranchia, or Phanerobanchia Bonap. Distr. An. Vert. 1832. 
Exobranches ou Proteoides Dum. & Bibr. Erp. Gen. viii. 94. 
B, U. trematodera 8. Baird, J. A. N. Phil. 1849, 290. 
A. Amphipneura Swains. Cab. Cyc. i. 339. 1839. 
Synopsis of Families. 
L Prorers. Legs four, weak. Tail compressed. Palate with 
a single series of teeth on the front edge of the vomerine 
bone. 
II. Sirewipz. Legs two, anterior. Body subcylindrical. Pala- 
tine teeth in numerous cross series on the vomerine bone. 
Fam. IL. PROTEID4. 
Limbs four, weak. 
Tail compressed. 
Gill-flaps distinct. 
Palatine teeth in two long series on the front edge of the vomerine 
bones. t. 4. f.16. 
Proteina Gray, Ann. Phil. 1825, 215. 
Ichthyoida (part.) Latr. Fam. Nat. 1825. 
Proteide Hogg, Ann. N. Hist. 1839. 
Hypochthonina Bonap, Amph. Eur. 
Synopsis of Genera. 
1. Proteus. Head long, truncated in front. Toes 3:4. Tail 
short, compressed. Maxillary bone incomplete, toothless. 
2. Necrurus. Head broad, depressed. Toes 4:4. Tail com- ‘i 
pressed. Maxillary bone complete, toothed. ‘ 
