I04 OHIO STATE ACADEMY OP SCIENCE. 



■60. Throat white. — Bascanion constrictor^-^. 128. 



Throat color of belly. 61. 

 61. A ring around neck. — Diadophis regalis arnyi— p. 12S. 



No ring around the neck. — Eutainia sirtalis graminea — p. 134. 



-62. Tip of snout upturned.— fieierodon plaiyrhinus—^. 126. 



Tip of snout not upturned. 63. 



63. Top of head bright copper-colored. — Coluber vulpinus—^. 12^. 

 Top of head not coppery. 64. 



64. Belly reddish or salmon-colored. 65. 

 Belly not reddish. 68. 



•65. Uniform below, without markings. 66. 

 With markings below. 67. 



66. Three white dots on back of head.— 5forfrw occipitomaculata — p. 133. 

 No dots on top of head. — Matrix fasdata erythrogaster — p. 131. 



67. Scales smooth. A yellow ring around neck. — 



Diadophis punctaius — p. 126. 

 Scales rough. No collar. — Natrix kirtlandi — ^p. 132. 



68. Stripes above, no spots. 69. 



, Stripes and spots or spots alone. 72. 

 ■69. Yellowish below.— Natrix leberis— -p. 1^2. 



Greenish below, 70. 



70. A dorsal strijje. 71. 



No dorsal stripe. — Eutainia saurita — p. 133. 



71. Greyish, dots on either side of dorsal stripe. — Storeria dekayi — p. 132. 

 No series of spots along dorsal stripe. — 



Eutainia sirtalis obscura — p. 134. 



72. Scales smooth. 73. 

 Scales rough. 76. 



73. Markings in form of minute black dots, scattered promiscuously. — 



Virginia valeriae — p. 133. 

 Spots in form of blotches. 74. 



74. Scales white-edged. — Coluber obsoletus obsoletus — p. 129. 

 Scales not white-edged. 75. 



75. No yellow band running back from eye. — 



Osceola doliata doliata — p. 130. 

 A yellow band running back from eye. — 



Osceola doliata, iriangula — p, 130. 



76. Ground color whitish. — Piiuophis melanoleucus — p. 129. 

 Ground color dark. 77. 



77. Belly blotched. 78. 



No blotches on belly. 79. 



78. A lateral series of blotches. — Natrix fasdata sipedon — p. 131. 

 No lateral series of blotches. — Natrix fasdata fasdata — p. 130. 



-79. Stripes and squarish spots. — Eutainia sirtalis sirtalis — p. 134. 



Spots, no stripes. — Eutainia sirtalis ordinata — p. 134. 



