200 



PLATE III. 



Figure 11. Carapace of Chrysemys marginata ; d., the neural epidermal plates; c, 

 the costals; m., the marginals; n., the nuchal. Natural Hize. 



Figure 12. Plastron of Chrysemys marginata; g., the gular plates; h., the humerals; 

 p., the pectorals ; a,, the abdominals; /., the femorals ; a?i., the anals. 

 Natural size. 



