Van Soest, 1975a
Solitary zooids: up to 32.5 mm long, excluding test (Cyclosalpa danae). Body muscles continuous dorsally, except MI and MII; and interrupted ventrally, except MVII. A branch of MVII linking MVI and MVII laterally. Intermediate muscle interrupted ventrally. Total number of muscular fibers: 151 in the holotype. One pair of round, presumably light, organs, between MIV and MV. Dorsal tubercle strongly convoluted.
Aggregate zooids: up to 45.5 mm long (Cyclosalpa danae 1). Body muscles usually as in Cyclosalpa affinis, but intermediate muscle not attached to MI. One pair of peculiarly shaped, presumably light, organs, between MII and MIII.