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Order SAURIA. 



Scaled reptiles usually possessing eyelids and four external 

 limbs. Rami of lower jaw connected by a bony suture. Limbs 

 and eyelids never both absent. Urinary products passed per 

 cloacam, the imperforate grooved penis acting as a copulatory 

 organ only. 



The second Order of Reptiles is divisible into two main sections, 

 or sub-orders, as they might be termed. The first of which, 

 though embracing the most powerful of living predatory animals, 

 is stiU happily for man on the decline, and possesses no living 

 representatives comparable with the huge dinosaurians of the 

 secondary period. Formidable as are the grisly bear and the 

 tiger, yet in its own element a crocodile is more than a match for 

 either, and there are good reasons for supposing that even 

 elephants are sometimes seized and drowned when crossing 

 rivers infested by an unusually large individual, though on land 

 seemingly authentic cases have been recorded of tigers des- 

 troying small crocodiles for food by springing on them when 

 asleep, and dislocating the spine by bending back the head on 

 the neck with their paws. 



Section A. Emydosauria, (Water Saurians.) 



Vent longitudinal. The generative organs single. Penis 

 grooved. Oviparous. Inhabiting rivers, and occasionally the sea, 

 near the shore, within the tropics especially near the mouths of 

 rivers where free from rocks. 



Family CrocodilidjE. 



Back protected by long plates embedded in the skin. Tail com- 

 pressed vertically for swimming. Teeth strong, conical embedded 

 in sockets, and replaced from time to time by ne^ teeth developed 

 beneath and within the old ones. Vent longitudinal, linear. 

 Habits predatory, aquatic, crepuscular, or nocturnal. Toes five 

 -before, four behind. Claws three on all the feet. 



