Ciocalypta, [225]

Cirripathes, [408];

C. spiralis, [408]

Cirrus, of Crinoidea, [430], [580];

of Antedon rosacea, [581], [585];

of Rhizocrinidae, [588], [590];

of Pentacrinidae, [588], [591], [592];

of Rhizocrinus, [591];

of Comatulidae, [594];

of Actinometra, [594];