216 R. W. SHUFELDT 



We are now in a position to examine some chelonian material 

 and compare what it presents with respect to the vertebrae 

 and to contrast the results with the statements of the various 

 authorities introduced in the foregoing paragraphs. 



In my private collection there are perfect skeletons of the 

 following turtles and tortoises : 



1. Gopher tortoise (juv.) Testudo polyphemus. 



2. Box tortoise (numerous skeletons) Terepene Carolina. 



3. Musk tortoise, Aromochelys odoratus. 



4. Mud turtle, Cinosternum pennsylvanicum. 



5. Painted turtle, Chrj^semys picta. 



6. Bell's terrapin, Chrysemys belli. 



7. Cumberland terrapin (juv.) Chrysemys elegans. 



8. Yellow-bellied terrapin (juv.) Chrysemys scabra. 



9. Lesueur's terrapin, Malacoclemmys lesueurii. 



10. Spotted turtle, Chelopus guttatus. 



11. Snapping turtle, Chelydra serpentina. 



12. Soft-shelled turtle, Amyda ferox. 



In addition to the above skeletons, I also have before me the 

 material given below, for the loan of which I am indebted to the 

 United States National Museum, to which institution it belongs. 



1. Testudo ephippium (Duncan Island, Galapagos). No. 

 59867, cervical vertebrae. 



2. Leading cervical vertebrae of a crocodile from Batavia, 

 Java (May, 1909) — species? Incomplete; free 'odontoid' of 

 second vertebrae missing. 



3. Hawksbill turtle, Eretmochelys imbricata. Key West, 

 Florida. No. 59866. Cervical vertebrae; hyoid; trachea; caudal 

 vertebrae; adult. 



4. Amyda ferox, adult. Florida. Cervical and caudal verte- 

 brae; pectoral arch. No. 60534. 



5. Testudo sp? No. 61059. Vertebrae and other bones. 

 National Zoological Park, July, 1918. 



6. Amyda cartilagina, adult. No. 029550, Depok, Java. 

 Spinal column complete. 



Omitting the second or axis vertebra, which will be taken up 

 further on, it may be noted that in the chain of cervical vertebrae 



