Vlll 



CLASSIFICATION. 



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

 Anatidce, Ducks. 

 Colymbidce, Divers. 

 Alcidoe, Auks. 

 Procellarida, Petrels. 

 Larida, Gulls. 

 Pelecanidce, 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, TESTUDINATA. 



2d. SAURIANS. 



ORDER, SAURIA. 



1. Amydte, 



2. Chelonii, 



Marsh and 



River Tor- 



toises. 



Families. 



' Testudinina, Land Tortoises. 

 EmydoidcR, "j 



Cinostcrnoidee, 

 Chelydroidte, 

 Hydraspidce, 

 Chelyoidee, 

 Trionychidce, J 



Chelonidx, Uea Turtles. 



Sphargidce, ) 



C Alligators or Caimans of America. 



Fan, CrocoXKte. \ g^of 3 tl". 



[ Enaliosauria, (Fossil Fish-Lizards). 

 " Chameeleonida:, Chamaeleons. 

 " Geckotida:, Geckos. 

 " Iguanida, Iguanas. 



Varanidfe, Varans. 



Teidte, Teguixans. 



Lcuertida, True Lizards. 



ChalcidcR, Snakelike do. 



Scincida, Scinks. 



(Family Colubrida, (mostly) harmless Snakes. ^ Sub-order 

 " Boida, Boas and Pythons. V COLU- 



" Hydridte, Water (Venomous) Snakes. ) BRINA. 

 " Viperida, Vipers, do. 5 Sub-order 



" Crotalidce, Rattle Snakes (all kinds.) ] VIPERINA 

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



tadpole state.) 



'Family Ccedliida, (Caecilia.) Apodous or without feet. 

 Ranid^ (Frogs.) ) A ^ 



Bufoidce, (Toads.) ) 



Salamanders 

 Salamandridce, 



ORDER AMPHIBIA. 



Land-Newts [- 

 Tritons, Water-Newts. ) ta 



Amphiuma } 

 Amphiumida, Menopoma or [ 



Mud-devil. ) [gills.) 

 Sub-order PERENNIBRANCHIATA, (with enduring 

 Proteidce, (Proteus, Axolotl, Siren.) 



