104 OHIO STATE ACADEMY OF SCIENCE. 



60. Throat white. — Bascanion constrictor — p. 128. 

 Throat color of belly. 61. 



61. A ring around neck. — Diadophis rcgalis amyi — p. 126. 

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



62. Tip of snout upturned. — Heterodon platyrliinus — p. 126. 

 Tip of snout not upturned. 63. 



63. Top of head bright copper-colored. — Coluber z'ulpiuus—p. 128. 

 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. — Storeria occipilomaculata — p. 133. 

 No dots on top of head. — Nairix fasciata erythrogaster — p. 131. 



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



Diadophis punctatus — p. 1 26. 



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. 132. 

 Greenish below, 70. 



70. A dorsal stripe. 71. 



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



71. Gre} T ish, dots on either side of dorsal stripe. — Storeria dekayi — p. 132. 

 No series of spots along dorsal stripe. — 



Entainia 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 }-ellow band running back from eye. — 



Osceola doliata doliata — p. 130. 

 A yellow band running back from eye. — 



Osceola doliata triangula — p. 130. 



76. Ground color whitish. — Pituopliis melanolcucus — p. 129. 

 Ground color dark. 77. 



77. Belly blotched. 78. 



No blotches on belly. 79. 



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

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



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

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



