Polyp: Colonies erect, monosiphonic or slightly polysiphonic. Hydrocaulus branched or unbranched, arising from a creeping hydrorhiza. Hydrothecae sessile or peduncled, shallow, often regenerated, with a ring of large desmocytes and a diaphragm basally, in two opposite alternate rows from hydrocaulus and hydrocladia. Hydranth large, elongated, not retractable into hydrotheca; intertentacular web absent; gland cells at base of tentacles. A pair of nematodactyls between tentacular whorl and curving over hypostome. Cnidome: microbasic mastigophores and pseudostenoteles. Reproduction: Swimming gonophores. Gonotheca solitary, urn to cone-shaped. Ecology and Distribution: Originally distributed in the West Pacific Ocean and can now be found on the Pacific and Atlantic coasts of Panama. In Bocas del Toro, known near the STRI weather station, San Cristobal, and the vicinity of Manuguar Cay. Similar taxa: Campanulinidae.