CLASSIFICATION. 



(T.) NATATORES, (Swimmers). Six families. 

 Anatidce, Ducks. 

 Colymbida, Divers. 

 Alcidce, Auks. 

 Procellarida, Petrels. 

 Larida, Gulls. 

 Pelecanida, Pelicans. 



The COLD BLOODED Division includes REPTILES and FISHES. 

 I. REPTILES, four orders, viz. CHELONIANS (Turtles). 



SAURIANS (Lizards, Crocodiles). 

 OPHIDIANS (Snakes). 

 AMPHIBIANS (Frogs, Toads, &c.) 



1st. CHELONIANS, (CHELONIA,) arranged by Agassiz in his late work, as 

 follows : 



Sub-orders. 



ORDER, TESTUDLNATA. 



2d. SAURIANS. 



ORDER, SAURIA. 



1. Amy da, - 



2. Chelonii, 



Fam. Crocodilidce. 



Land Tortoises. 



Marsh and 

 River Tor 

 toises. 



Sea Turtles. 



Families. 

 Testudinina, 

 Emydoida, 

 Cinostcrnoidfe, 

 ChelydroidtB, 

 Hydraspida, 

 Chelyoida, 

 Trionychidce, 

 ( Chelonidte, 

 ( Sphargidce, 



( Alligators or Caimans of America. 

 J Crocodiles of the Nile, 

 j Gavials of the Ganges. 

 [ Enaliosauria, (Fossil Fish-Lizards). 

 ChamceleonidcE, Chamaeleons. 

 Geckotida, Geckos. 

 Iguanida, Iguanas. 

 Varanida, Varans. 

 TeidfE, Teguixans. 

 Lcnertidce, True Lizards. 

 Chalcidce, Snakelike do. 

 Scincidce, Scinks. 



Family Colubridce, (mostly) harmless Snakes. 

 Boida, Boas and Pythons. 

 Hydridtp, Water (Venomous) Snakes. 

 Viperidte, Vipers, do. 

 Crotalidce, Rattle Snakes (all kinds.) 

 4th. AMPHIBIANS, sub-order. Caducibranchiata, (Gills perishable in the 



tadpole state.) 

 Family Cteciliidce, (Caecilia.) Apodous or without feet. 



8d. OPHIDIANS. 

 ORDER OPHIDIA. 



ORDER AMPHIBIA. 





tailless - 



aer-e 

 ma ) 

 a or &amp;gt; 

 il. 



with 

 tails 



Salamanders 

 Land-Newts 

 Tritons, Water-Xewts. 

 [ Amphiuma 

 Amphiumidce, &amp;lt; Menopoma 



( Mud-devil. f gills.) 



Sub-order PERENNIBRANCHIATA, (with enduring 

 Proteidee, (Proteus, Axolotl, Siren.) 



