93 
cephalia , of lizard-like reptiles, from which modern lizards 
and turtles are probably descended. 
Of the Chelonia some two hundred species are known. 
These consist of the turtles proper, which are generally of 
large size and live in the sea; the terrapins, which live in 
streams, ponds, and marshes; and the tortoises or land tur¬ 
tles. There are a number of forms belonging to the Ameri¬ 
can fauna, of which the following are on exhibition :— 
The Leatherback Turtle ( Dermochelys coriacea ), At¬ 
lantic coast. 
The Green Turtle (Chelonia mydas), Atlantic coast. 
The Soft-shelled Turtle (Trionyx ferox ), Gulf States. 
The Snapper Terrapin (Chelydra serpentina ), North and 
South America. 
The Musk Terrapin (Cinosternum odoraturn), Eastern and 
Southern States. 
The Mud Terrapin (Cinosternum pennsylvanicum ), East¬ 
ern and Southern States. 
Henry’s Mud Terrapin (C. henrici), Arizona and Mexico. 
The Red-bellied Terrapin (Chrysemys rubriventris) y 
Middle Atlantic States. 
The Florida Terrapin (C. concinna ), Southern States. 
The Salt Water Terrapin, or Diamond-back ( Malaco - 
clemmys terrapin ), Atlantic and Gulf States. 
The Checkered Terrapin (Chrysemys picia) } Eastern and 
Southern States. 
The Chicken Terrapin (C. reticulata ), Gulf States. 
Muhlenberg’s Terrapin (Chelopus muhlenbergi ), Penn¬ 
sylvania and New York. 
Blanding’s Tortoise (.Emys blandingi), western United 
States. 
The Box Tortoise ( Terrapene Carolina ), Eastern and 
Southern States. 
The Painted Box Tortoise (T. ornata ), western United 
States. 
The Western Gopher ( Testudo berlandieri ), southwestern 
United States. 
Agassiz’s Gopher Tortoise (T. agassizi), Arizona and 
Lower California. 
Gopher Tortoise (T. polyphemus ), Florida. 
The Radiated Tortoise ( 7 ’. radiata ), Madagascar. 
