Caudina chilensis – synonym of Paracaudina chiliensis
Caudina ransonnetti – synonym of Paracaudina chiliensis
Chiridota australiana – synonym of Taeniogyrus australianus
Chiridota rufescens – synonym of Polycheira rufescens
Chondrocloea recta – synonym of Synaptula recta
Colochirus anceps – synonym of Pentacta anceps
Colochirus australis – synonym of Pentacta australis
Colochirus axiologus – synonym of Pseudocolochirus axiologus
Colochirus challengeri – synonym of Plesiocolochirus challengeri
Colochirus coeruleus – synonym of Pentacta quadrangularis
Colochirus crassus – synonym of Pentacta crassa
Colochirus doliolum – synonym of Pentacta australis
Colochirus quadrangularis – synonym of Pentacta quadrangularis
Colochirus spinousus – synonym of Plesiocolochirus spinosus
Colochirus tuberculosus – synonym of Pentacta anceps
Cucmaria acicula – synonym of Cladolabes acicula
Cucumaria africana – synonym of Afrocucumis africana
Cucumaria areolata – synonym of Havlockia versicolor
Cucumaria japonica – synonym of Cucumaria adela
Cucumaria semperi – synonym of Hemithyone semperi
Cystipus, Subgenus (Holothuria)
Cystipus pleuripus – synonym of Holothuria rigida