Mytilus, [VII.] 18-21.

Nassa, [XIX.] 1-3.

Natica, [XVI.] 13-19.

Neæra, [I.] 26-28.

Neritina, [XII.] 5.

Nucula, [VIII.] 1-5.

Odostomia, [XVII.] 1-31.

Ostrea, [VIII.] 17.

Otina, [XVI.] 25.

Ovula, [XX.] 2, 3.