 There were some refinements in the design among class members, and the armament in particular changed during their careers.In 1881 an enlarged version of the design was drawn up by Barnaby, with the hull being lengthened by another 10 ft. Two ships were ordered to this later design, which became the "Calypso" class.The "Comuses" and "Calypsos" were sometimes called the "C class" of corvettes, an informal term rather than an official designation.