Rept. REPTILIA AND BATRACHIA. 
Suborder 4. Fjrmisternia. Fams. Engystomidce, Phry- 
niscidai , Dendrobatuloi , Cophylidce , Zb/s- 
cophidaiy Colo8tethi(laiy Ranidas, Cerato- 
batrachidce. 
Class Monocondylia. 
Subclass I. Reptilia. 
Order i. Ichthyopterygia. Fams. Ichthyosaur idee, Mixo- 
sauridee. 
Order n. Testudinata. 
Suborder 1. ATHECiE. Fam. Dermochelydce. 
Suborder 2. Trionychoidea. Fam. Trionychid/ce. 
Suborder 3. Cryptodira. Fams. Chelomidccy Testudin - 
ulcEy Cinosternidcc , DermatemydklcCy Chely- 
dridcc, Baenidcc , Adocidce. 
Suborder 4. Pleurodira. . Fams. Pleurosternidaiy Sterno- 
theeridee , Pelomedusidce , Plesiochelydidcc , 
ChelydidcBy Carettochelydidoi. 
Order in. Tiieromora. 
Suborder 1. Placodontia. Fam. Placodontidcc. 
Suborder 2. Pkoganosauria. Fams. Mesosaurklai t Pro - 
colophodontidoiy Paloiohatteruda}, Ilomceo- 
sauridaiy Proterosauridce , Rhynchosauruhc. 
Suborder 3. Parasuchia. Fams ..Relodontidce, Acto- 
sauridee. 
Suborder 4. Anomodontia. Fam. Dicynodontidai. 
Suborder 5. Pelycosauria. Fams. Clepsydropida 
Pariotichidce, Bolosauridce. 
Suborder G. Cotylosauria. Fams. Pariasauridce , Zb’a- 
dectidce. 
Order iv. Plesiosauria. Fam. Plesiosaurulce , Nothosauridce, 
Lariosauridas. 
Order v. Ornitiiosauria. Fams. Pteranodontidce, Ptero - 
dactylidce. 
Order vi. Dinosauria. 
Suborder 1. Saurischia. Fams. Cetiosauridce , Ccduridai , 
Megalosauridcc. 
Suborder 2. Ortiiopoda. Fams. Agathaumidce, Omo- 
sauridee, Scelidosauridte, Iguanodontidw. 
Order vn. Crogodilia. Fams. Crocodilida ?, Goniopholidce , 
Teleosauridce. 
Order vm. Riiynchocepiialia. 
Suborder 1 . Sphenodontina. Fam . Splienodontidai. 
Suborder 2. Choristodera. Fam. Champsosauridcc. 
Order ix. Squamata. 
Suborder 1 . Lacertilia. (For minor divisions, see Zool. 
Rec. xxiv, Rept. p. 7.) 
Suborder 2. Pythonomorpha. Fams. Plioplatecarphlce , 
Mosasauridce. 
