THE MAMMALS OF FLORIDA. 123 
rule, the head is black, the back gray, and the under parts tawny ; 
length, including tail, 21 to 24; tail, 14 to 15. 
Famity DIDELPHID®. THE OPossuMs. 
DIDELPHIS MARSUPIALIS VIRGINIANA (Xe77). 
Opossum. 
OPOSSUM. 
Abundant throughout the State. It is nocturnal in its habits, and, 
therefore, although so common is rarely seen. 
The Porpoise (Phocena phocena L.) and the Dolphin ( Zursiops 
turs‘o L.) occur on the coast of Florida, and the former occasion- 
ally enters the rivers. 
