CHELOHTD.B. 



47 



Family IV. CHELONID^. 



Shell covered with epidermal shields. Caudal vertebrae pro- 

 coelous. Neck incompletely retractile ; cervical vertebrae short. 



Fig. 15. Skull of Chelone imlricata. 



Temple completely roofed over ; parietal bone in contact with the 

 squamosal. Limbs paddle-sbaped ; phalanges without condyles : 

 claws OTIC or two. 



Tbe Marine Turtles belong to three species, falling into two 



