E. bellula forms encrusting colonies that are lightly calcified and transparent in appearance. Zooids measure approximately 0.18 X 0.34 mm in size. There are usually 2 distal spines, but possibly more, which project from the proximal gymnocyst region. A branched spine often projects over the proximal end of the opesia. The lophophore measures an average of 0.225 mm in diameter and bears 10 tentacles.