CHELONrD.i;. 



47 



Family IV. CHELONID^. 



Shell covered with epidermal shields. Caudal vertebrre pro- 

 coelous. Neck incompletely retractile ; cervical vertebrae short. 



Fig. 15. — Skull of C'helone imhricafa. 



Temple completely roofed over ; parietal bone iu contact with the 

 squamosal. Limbs paddle-shaped ; phalaiiges without condyles ; 

 claws one or two. 



The Marine Turtles belong to three species, falling- into t\\o 



