Distinguishing Characteristics |
Gastropod (1 shell); shell spiral in shape; longer than wide; spire extended, pointed; background color light with darker brown or black zigzag oblique lines (a variation is with a dark background and white blotches spiraling on body whorl); 6-8 whorls; body whorl more than 1/2 shell height; spiral ribs on whorls; outer lip of aperture smooth, not flared; columella smooth, wide, purple to dark brown in color. |
Similar Species |
The dark background with the zigzag stripes distinguish this periwinkle. |
Habitat |
Gulf, on jetties |
Maximum Size |
2.5 cm (1 in) |
Other Common Names |
zebra periwinkle |
Previous Scientific Names |
Littorina ziczac, L. lineolata |
Comments |