Long, coiled tendrils extend from the four corners of the capsule. When the embryo is  long, the external gills have been lost, the dermal denticles have begun to develop, and light brown saddles are present.
Long, coiled tendrils emerge from the four corners of the capsule. When the embryo is long, the external gills are absent, dermal denticles begin to develop, and light brown saddles appear.