The anal fin is low and long, with a deep notch in the rear margin.

The carapace is pale yellow, with a black band surrounding the eyes and reaching to the rear margin.

It is often frayed or ragged along its rear margin and located about two-thirds the way along the back.

The axis is connected to the rear margin by a central furrow.

There is a nearly rectangular curtain of skin between the nares, with a fringed rear margin.

The entire rear margin of the caudal fin has a distinctive, broad, black band.

The anal fin has a strong notch in the rear margin.

They can be distinguished by pustules and six scales at the rear margin of their carapaces.

The anal fin is long and has a nearly straight rear margin.