PSEUDOSAURIA. i 
Orper II. PPEUDOSAURIA. 
Body elongate, lizard-like, with a tail. 
Legs four, rudimentary. 
Gills rudimentary, internal. Gill apertures permanent throughout » 
life. 
Internal nostrils on the sides of the palate, surrounded by the bone of 
the palate. 
Amphiumide G'ray, Ann. Phil. 1825, 216. 
Imperfectibranchia Hogg, Ann. N. H..1839. 
Ichthyodi hedreoglossi Wagler, Syst. 1830. 
Amph. abranchia Bell in Todd’s, Cyclop. Med. 1835 (not Hogg). 
A. urophora (part.) Hogg, Ann. N. H. 1839. 
B. tetrapoda (part.) Hogg, Ann. N. H. 1839. 
B. lacertiniformia (part.) Hogg, 1. c. 
Diplopneumena mancabranchia Hogg, |. c. 
Menopomatide Hogg, Ann. N. H. 1839. 
Monopneumena imperfectibranchia Hogg, |. c. 1839. 
Monopneumena caducibranchia arcumanentia Hogg’, 1839. 
A. diplopneumena imperfectibranchia Hogg, Ann. and Mag. N. H. 
1841, 362. 
Proteideee Tschudi, Batr. 1838, 26. 
_Derotremata Miiller, Isis, 1831, 710., Ann. and Mag. N. H. 1841, 
355. 
Cryptobranchoidee (part.) Fitz. Class. 66.; Holbrook, N. A. Herp. 
87 
Cryptobranchoidei Hichw. Zool. Spec. ii. 164. 
Ichthyodi (part.) Bonap. Amph. Eur. ii. 1839. 
Ichthyodea Fitz. S. R. 34. 
Hemisalamandre et Derotremata Fitz. S. Rept. 34. 
Salamandra andriadine Bonap. Fauna Ital., Amph. Eur. 11. 
B. U. Trematodera (part.) Dum. & Bib. 
B. U. Trematodera a. Baird, Jour. A. N. S. Phil. 1849, 289. 
Abranchia (part.) Swainson, Cab. Cyclop. il. 342. 
Synopsis of Families. 
I. Proronorsipz. Legs strong. Palatine teeth in a transverse 
arched series. 
Il. Ampuiumip#. Legs weak. Palatine teeth in two longitu- 
dinal diverging series. 
c 2 
