254 Trans. Acad. Sci. of St. Louis. 



SERPENTES. Snakes. 



44. Natrix cyclopium Dumeril and Bibron. Cyclops or Green Water 



Snake. 



45. Natrix rhomoifera Hallowell. Diamond-backed Water Snake. 



Holbrook's Water Snake. 



46. Natrix fasciata Linn. Banded or Southern Water Snake. Mocca- 



sin. 



47. Natrix fasciata erythrogaster Shaw. Red-bellied Water Snake. 



48. Natrix sipedon Linn. Common Water Snake. Water Moccasin. 



49. Natrix sipedon transversus Hallowell. Woodhouse's Water Snake. 



50. Natrix grahamii Baird and Girard. Graham's Water Snake. 



51. Thamnopliis proxima faireyi Baird and Girard. Fairey's Ribbon 



Snake. 



52. Thamnopliis radix Baird and Girard. Prairie or Racine Garter 



Snake. 



53. Thamnopliis sirtalis Linn. Common Garter Snake. Striped 



Snake. 



54. Storeria dekayi Holbrook. DeKay's Snake. DeKay's Brown 



Snake. 



55. Storeria occipitomaculata Storer. Storer's Snake. Red-bellied 



Snake. 



56. Tropidoclonium lineatum Hallowell. Lined Snake. 



57. Haldea striatula Linn. Little Brown Snake. 



58. Bascanion constrictor Linn. Blue Racer. Black Snake. 



59. Bascanion constrictor flaviventris Say. Yellow-bellied Racer. 



60. Bascanion flagellum Shaw. Coach Whip Snake. 



61. Pituophis sayi Schlegel. Bull Snake. Pine Snake. Western 



Bull Snake. 



62. Heterodon platyrhinos Latreille. Blowing Adder. Spread Head. 



Spreading Viper. 



63. Elaphe vulpinus Baird and Girard. Fox Snake. 



64. Elaphe guttatus Linn. Spotted Coluber. Spotted Racer. Corn 



Snake. Red Chicken Snake. Mouse Snake. 



65. Elaphe obsoletiis Say. Black Snake. Pilot Snake. Mountain 



Black Snake. Rat Snake. 



66. Elaphe confinis Baird and Girard. Spotted Chicken Snake. Gray 



Coluber. Gray Rat Snake. 



67. Elaphe spiloides Dumeril and Bibron. 



68. Elaphe emoryi Baird and Girard. Emory's Snake. 



69. Lampropeltis doliatus Linn. Milk Snake. House Snake. King 



Snake. 



