Part 23

Radiates, 1

Rhodactinia Davisii, 13

Sarsia, 68

Sea-urchin, 101

Sertularians, 66

Solaster endeca, 114

Star-fishes, 108

Synapta tenuis, 95

Systematic Table, 152

Tima formosa, 60

Toxopneustes drobachiensis, 101

Trachynema digitale, 45

Tubularia Couthouyi, 72

Tubularians, 67

Turris vesicaria, 69

Velella mutica, 84

Zygodactyla groenlandica, 57

THE END.

___________________________________________________________ Cambridge: Stereotyped and Printed by Welch, Bigelow, & Co.

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Transcriber's Notes

With the exception of the corrections detailed below and some minor corrections (missing periods, commas, etc.) which were made but are not listed, the text presented is that in the original printed version. The illustration labels were originally presented at the bottom of the containing page; but have been moved beneath the illustrations.

Typographical Corrections

Page xi: Ophiopolis => Ophiopholis Page 4: diferent => different Page 21, 101, 127, 131, 148: so called => so-called

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