LIST OF PLATES. 



Tab. I. and II. Chersina angulata 



Tab. III. Upper fig. Testudo stellata, middle aged 



Lower fig. Testudo pardalis, young 

 Tab. IV. Emys vulgaris, young 

 Tab. V. Emys tecta 

 Tab y\. f- 1. Kinosternon odoratum 



f. 2. Chelodina longicollis 



f. 3. Hydrastis subrufa . 



f. 4. Kinosternon P ennsylvanicum . 

 Tab. VII. /! 1. Kinosternon scorpioides var. acuta 



f. 2. Chelonia imbricata . 



f. 3. Emys crassicollis 



PAGE 



15 

 12 

 ib. 

 24 

 23 

 35 

 39 

 39 

 35 

 34 

 52 

 21 



The figures on the shields of the three last plates represent the 

 relative parts in the different species. 



1. The vertebral shields, scutella vertebralia. 



2. The costal shields, scutella costalia. 



3. The marginal shields, scutella marginalia, seen on the 



upper and under sides of the shell ; in the figures, the 

 small figure on the side represents the first, second, third, 

 &c. plate, as 2' the first costal plate, and so on. 



3 a. The nuchal marginal plate, scutellum nuchale. 



3 6. The caudal marginal shields, scutella caudalia. 



4. The axillary shields, scutella axillaria. 



5. The jnguinal shields, scutella inguinale. 



6. The gular shields, scutella gularia. 



6 a. The intergular shield, scutellum intergulare. 



7. The humeral shields, scutella humeralia. 



8. The pectoral shields, scutella pectoralia. 



9. The abdominal shields, scutella abdominalia. 



10. The femoral shields, scutella femoralia. 



11. The anal shields, scutella analia. 



12. The additional plates of the Marine Turtles, scutella 



lateralia. 



Tab. VIII. and IX. Emys dentata 

 Tab. X. Trionyx Hurum, young 





20 



47 



