192 PROCEEDINGS OF THE ACADEMY OF [Mar., 



visionally identified as C. horridus, and later Prof. J. C. Bradley's 

 capture verified this identification in the fall of 1913. On Mixon's 

 Hammock, Jmie 16, 1912, we also found beneath an o^ I roof on the 

 ground the cast skin of this species. 



Explanation of Plates I-III. 



Plate I. — Fig. 1. — Carapace of PlatypeUis ferox. 

 Fig. 2. — Carapace of PlatypeUis ferox. 

 Fig. 3. — Skull of Macroclemmys temminckii. 

 Fig. 4. — Skull of PlatypeUis ferox. 

 Fig. 5. — Skull of Chelydra serpentina. 



Plate II. — Fig. 1. — Eggs of Alligator mississippiensis. 

 Fig. 2. — Eggs of Cnemidophorus sexlineatus. 

 Fig. 3. — Eggs of Cinosternum pennsylvanicum. 

 Fig. 4. — Eggs of Chrysemys floridana. 

 Fig. 5. — Eggs of Chelydra serpentina. 

 Fig. 6. — Eggs of PlatypeUis ferox. 



Plate III. — Fig. 1. — -Ovarian egg of Diadophis pundatus. 

 Fig. 2. — Ovarian egg of Elaphe obsoletus. 

 Fig. 3. — Ovarian egg of Cemophora coccinea. 

 Fig. 4. — Embryos of Haldea striatula. 

 Fig. 5. — Egg of Coluber constrictor. 

 Fig. 6. — Egg of Chrysemys floridana. 

 Fig. 7. — Ovarian egg of Heterodon platyrhinus. 



