Part 20

Amphiura squamata SARS. Ophiopholis bellis LYM. Astrophyton Agassizii STIMP.

ORDER III.--ASTERIDEA FORBES.

Ctenodiscus crispatus D. & K. Hippasteria phrygiana AG. Cribrella oculata FORBES. Solaster endeca FORBES. Crossaster papposa M. & T. Astracanthion pallidus AG. Astracanthion berylinus AG.

ORDER IV.--ECHINIDEA LAM.

Toxopneustes drobachiensis AG. Echinarachnius parma GRAY.

ORDER V.--HOLOTHURIDEA BRANDT.

Caudina arenata STIMP. Synapta tenuis AYRES. Cuvieria squamata D. & K. Pentacta frondosa JÄG.

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INDEX.

PAGE Abbreviations of authors' names, xii

Acalephs, 21

Actinia, 7

Actinoids, 7

Alecto Eschrichtii, 121

Alecto meridionalis, 121

Amphiura squamata, 115

Arachnactis brachiolata, 14

Astracanthion berylinus, 108

Astracanthion pallidus, 112

Astrangia Danæ, 16

Astrophyton Agassizii, 117

Aurelia flavidula, 42

Bicidium parasiticum, 15

Bolina alata, 31

Bougainvillia superciliaris, 69

Campanella pachyderma, 44

Campanularians, 49

Caudina arenata, 97