Issued as part of the ongoing Bicentennial celebration, the 13Â¢ State Flags pane was a first in U.S. history. This was the first time a pane with 50 face-different stamps was issued.
NON-VENOMOUS. NON-VENOMOUS. Description: A greenish-brown snake with a diamond-like pattern on its back and dark bars on the sides of its body. The belly scales are yellow with dark markings on the sides. Males are smaller and thinner than females and they have small bumps on their chin.
Snakes That Are Brown With Markings Like Diamonds. Tom Brakefield/Stockbyte/Getty Images. Although several physical attributes must be observed, such as the shape of the head, color of the belly and type of scales, in order to positively identify a species, a snake's color and pattern give immediate clues that can be noted from a safe distance.