66 
Family TESTUDINIDAE. Mud Turtles and Tortoises. 
Outer surface covered with horny plates. Feet adapted for 
walking on land. Size comparatively small. 
58. PACIFIC MUD TURTLE. Clemmys marmorata. 
Occasional locally, in the coast region. There are few suit- 
able streams or ponds in this county where Mud Turtles could 
live. 
The Desert Tortoises have been found in Imperial County 
and it is possible that they may occur in the northeastern corner 
of San Diego County. 
