Seminatrix pygaea cyclas South Florida Swamp Snake , Black Swamp Snake, Red-bellied Swamp Snake Richard Bartlett photo.
Adults are shiny and solid black.
The belly is red with black on the edges. It has 117 or fewer belly scales. The scales on the back are smooth and there are 17 dorsal scale rows at midbody. The pupil is round. Juvenile coloration is similar to that of adults.