8 CONTEXTS. 



Page 



Thamnophis saurihis 113 



Thamnophis butlerii 116 



Thmnnophis sirtalis 119 



Sistrurus catenatus 124 



Order Testudinata (Turtles) 128 



Key to the Genera and Species of Michigan Turtles 128 



Platypeltis spinifera 129 



Chelydra serpentina 133 



Kinostemon odoratum 137 



Chrysemys cinerea 141 



Chrysemys belli 143 



Clemmys guttata 147 



Graptemys geographica 150 



Emydoidea l)landingii 153 



Terrapene Carolina ^ 155 



Glossary 159 



General Bibliography 1 62 



Memoranda towards a Bibliography of the Archaeology of Michigan, by Harlan I. Smith . 167 



LIST OF ILLUSTRATIONS. 



FIGURES. 



1. Diagram of mouth of frog to show position of teeth 17 



2. Diagram of mouth of salamander to show position of teeth 17 



3. Distribution of Nedurus maculostis 25 



4. Distribution of Ambystoma tigrinum 27 



5. Distribution of Ambystoma punctatum 29 



6. Distribution of Ambystoma jeffersonianum 31 



7. Distribution of Plethodon erythronotus 33 



8. Distribution of Hemidadylium scutatum, 35 



9. Distribution of Dieviidylus viridescens 38 



10. Distribution of Bufo americanus 40 



11. Distribution of Hyla versicolor 42 



12. Distribution of Hyla pickeringii 44 



13. Distribution of Acris gryllus 46 



14. Distribution of Chorophilus nigritus 48 



15. Distribution of Rana pipiens 50 



16. Distribution of Rana palustris 52 



17. Distribution of Rana clamitans 55 



18. Distribution of Rana cantabrigensis 56 



19. Distribution of Rajia septentrionalis 58 



20. Distribution of Rana catesbeana 60 



21. Head of snake, side view, to show arrangement of scales 68 



22. Head of snake, top view, to show arrangement of scales 68 



23. Scales on the body of a snake 68 



24. Carapace of Emydoidea blandingii to show position of plates 70 



25. Plastron of Emydoidea blandingii to show position of plates 71 



26. Plastron of Chelydra serpe^itina 72 



27. Plastron of Kinosternon odoratum 73 



28. Distribution of Evmeces quinquilineatus 80 



29. Distribution of Storeria dekayi 84 



30. Distribution of Storeria occipitomaculata 86 



31. Distribution of Heterodon platyrhinus 88 



32. Distribution of Elaphe obsjletus 91 



33. Distribution of Elaphe vulpinus 94 



34. Distribution of A^atrix sipedon 97 



35. Distribution of Regina leberis 99 



36. Distribution of Clonophis kirtlandii -. 101 



37. Distribution of Liopeltis vernalis 103 



38. Distribution of Diadophis punctata 106 



39. Distribution of Bascanion constrictor 109 



