CATALOGUE 



OF 



MAMMALIA. 



Class 1. MAMMALIA. 



Vertebrate animals, more or less covered with hair, and furnished 

 with milk-giving mammary glands ; respiring by lungs ; having a 

 heart with two ventricles and two auricles, circulating warm blood, 

 enclosed in a thorax, separated from tho abdominal viscera by a 

 diaphragm ; viviparous ; tho young nourished with milk. 



Synopsis of Okders. 



I. Quadrupeds, or bipeds, with the fingers and toes elongate, flexible, and 



armed with claws or nails. Unguiculata. 



Order I. Piumates. Teeth of three sorts. Thumb and great toe 

 opposable to the fingers or toes. Teats pectoral. Penis free. 



Order II. Feu^e. Teeth of three sorts. Thumb not opposable. Teats 

 ventral. Penis in a sheath. 



Order III. Gliues. Teeth of two sorts ; cutting -teeth large ; canines 

 wanting. Penis in a sheath. Teats ventral. 



II. Quadrupeds, with the toes short, enclosed in the skin and armed with 



hoofs. Ungulata. 



Order IV. Biiuta. Teeth all of one kind or entirely wanting. Hoof 

 often compressed, elongate. 



Order V. Pecora. Teeth of two or three kinds. Stomach complicated. 

 Front of upper jaw toothless, callous. Toes in pairs. Hoofs 

 triangular. 



Order VI. Bellu^e. Teeth of three kinds. Stomach simple. Upper 

 cutting-teeth distinct. Skin thick, nearly naked. Hoofs triangular or 

 nail-like. 



III. Limbs Jin-like. Hod;/ elon<jatc,fish-likc,withan expanded horizontal 

 tail. Nostrils valvular. 



Order VII. Sjhenia. Nostrils normal, moderate, in front of the nose. 

 Teetli of two or three kinds. 



Order VIII. Cete. Nostrils large, suhvertical, on tho crown, far from 

 the mouth. Teeth all similar or wanting. 



B 



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