Part 42

Sea Lemon, 40.

Sea Urchin, 175.

Serpula, 37, 284.

Shells, 11, 51.

---- Growth of, 17, 20.

Shrimp, 101.

Siponcle, 28.

Sponges, 315-325.

Squat-lobsters, 191.

Squirters, 299, 306.

Starlet, 173.

Stephanomia, 258.

Stickleback, 122.

Stone-turning, 36.

Sucker, Two-spotted, 168.

Sun-star, 224.

Thornback, 119.

Topknot, 108.

Top, Purple-spotted, 7-12.

Torbay Bonnet, 148.

Triope, 39.

Tube-worms, 284.

Tunicata, 299.

---- Oceanic, 312.

---- Transformations of, 308.

Tusk-shell, 146.

Tyre, Purple of, 46.

Urchin, Sea, 175.