| No. |
| [Frontispiece], | 1 |
| [Compound Vorticellæ], | 2 |
| ["Granny]," Sir John Dalyell's celebrated Anemone, | 3 |
| [A. Troglodytes], | 4 |
| [A. Crassicornis], | 5 |
| [Edible Crab], | 6 |
| [Edible Crab] casting its Shell (from Nature), | 7 |
| [Spider Crab], | 8 |
| [Shore Crab], | 9 |
| [Porcelain Crab], | 10 |
| [Hermit Crab], | 11 |
| [Hermit Crab] in Shell of Large Whelk, | 12 |
| [Ship Barnacles], | 13 |
| [Acorn Barnacles] attached to Shell of the Limpet, | 14 |
| [The Limpet], as seen from beneath, | 15 |
| [Laminated Nereis], | 16 |
| [Common Mussel],—Shell open, | 17 |
| [Common Mussel],—Shell closed, | 18 |
| [The Beröe], | 19 |
| [Fan Amphitrite], | 20 |
| [Terebella Figulus], | 21 |
| [Terebella Littoralis], | 22 |
| [The Sea-Mouse], | 23 |
| [Doris], | 24 |
| [Young of Doris], | 25 |
| [Eolis], | 26 |
| [The Pholas], and Valves of its Shell, | 27 |
| [The Brittle Star], | 28 |
| [Common Cross-fish], | 29 |
| [Common Sun-Star] (with 14 rays), | 30 |
| [Purple-tipped Sea-Urchin], | 31 |
| [Purple-tipped Sea-Urchin], Spine of, | 32 |
| [Purple-tipped Sea-Urchin], Suckers of, | 33 |
| [The Aplysia], or Sea-Hare, | 34 |
| [Teeth] of the Sea-Urchin (two views), | 35 |
| [The Sea-Cucumber], | 36 |
| [Serpulæ] attached to piece of rock, | 37 |
| [The Solen], or Razor Fish, | 38 |
| [The Blenny], | 39 |
| [The Viviparous Blenny], | 40 |
| [The Spotted Blenny], or Gunnel-fish, | 41 |
| [The Montagu Sucker-fish] (three views), | 42 |
| [The Montagu Sucker-fish], Sucker of (magnified), | 43 |