Choose the snake that best fits the description.
If neither matches go back to the Key to the Colubrids.

  
A. Medium-sized snake (less than 1 m), back is tan to dark brown with 
yellow stripe on lower side of belly, belly yellow with 4 distinct brown 
stripes, scales keeled and in 19 rows, southern Ontario only.
             
             Regina septemvittata (Queen Snake)



B. Large snake (grows to over 2 m), in Canada always black, possibly 
with white showing between scales, belly uniformly white, yellow, orange 
or gray often with dark mottling, scales weakly keeled and in 25-33 rows, 
only in southern Ontario.
             
             Elaphe obsoleta (Rat Snake)