Thamnophis marcianus - Checkered Garter Snake

     1.  Pale with a checkered pattern of large black blotching on a brown, yellow, or olive ground color
     2.  A pair of black blotches at the back of the head
     3.  Top of head olive in color

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• Leptotyphlopidae • Boidae • Viperidae • Colubridae • Elapidae •