144 
MAMMALIA. 
Bos urus —The Urus, or European Bison. 
Plate XXVII. fig. 4. 
Head, shoulders, and breast, covered with long brown coarse 
hair; under the throat a long pendant beard ; horns thick, round, 
lateral, and curved upwards. More than ten feet long. In¬ 
habits the forests of Europe. 
Variety —The Common Bull. 
Plate XXVII. fig. 2. 
Hair smooth and short all over the body ; slightly curled on 
the forehead. 
The Cow. 
Plate XXVII. fig. 3. 
Variety. —The Zebu. 
Plate XXXIII. fig. 6. 
Horns erect, and slightly turned back at points; with a small 
hump on the shoulders. About three feet high. Inhabits 
India. 
ORDER X.—CETACEA. 
Body piscirorm, terminated by a caudal appendage, cartilagin¬ 
ous and horizontal; two anterior extremities formed like fins, 
the bones of which are flattened and very short; neck very short 
and thick ; two pectoral or two abdominal teats; ears with very 
small external openings ; brain large ; hemisphere well develop¬ 
ed ; bone of the internal ear separate from the head ; two rudi¬ 
mentary bones in the flesh are substituted for the pelvis. 
Family I. —Sirenia. 
Herbivorous Cetacea. 
Molars flat in the crown; some species are furnished with 
