506 MAMMALIA. 



opening at the end of the upper mandible ; cheek pouches ; 

 feet webbed, having five toes, with a spur on the hind ones in 

 the male ; tail short, broad at the base. 



Ornithory?ichus rvfus. — The Duck- Billed Platypus. — 

 Plate XVII*. fig. 3.— Described, vol. II. p. 399. 



ORDER VIII.— PACHYDERMATA. 



This order is so named from the thickness of the skin of the 

 animals which compose it. They have two or three kinds of 

 teeth. The four extremities furnished with the toes, variable 

 in number, and terminated with strong nails or hoofs. They 

 have no clavicles ; and the organs of digestion are not formed 

 for ruminating. 



Family Proboscidea. 



The upper incisory teeth are in the form of elongated tusks ; 

 grinders are compound, and small in number ; with five toes on 

 all the feet j nose prolonged into a proboscis or trunk. 



Genus 1. — Elephas. — L 



innaus. 



Generic Character. — Incisory teeth ^, no canine teeth, grind- 

 ers 2-«; total 10. The incisive teeth are enormously elongated, 

 and termed husks, which taper, and are bent upwards towards 

 tieir extremities, composed of ivory incased in a crust of ena- 

 mel ; the grinders are composed of vertical and transverse 

 iaminae ; feet with five toes on each ; nose elongated into a 

 cylindrical proboscis, moveable in all directions, with an elon- 

 gated finger-like member at its tip, which has the power of 

 grasping ; head very large ; ears large and flat ; neck very short ; 

 tail medium length, furnished with a tuft of hair ; two teats. 

 Nasal fossae greatly elevated. 



Elephas Indicus. — The Indian Elephant. — Plate XVII. 

 lig. 3.— Described, vol. II. p. 457. 



Genus 2. — Loxodonta. — F. Cuvier. 



Generic Character. — Incisory teeth or tusks *, no canine teeth, 

 grinders ^-| ; total 10. The enamel is disposed in lozenges; 

 Lt>ad small, round ; neck very short ; ears very large ; tail short ; 

 proboscis very thick at the base, and small at the point, where 



