Ref. No. | Title |
---|---|
294 | Chitons. Katharina tunicata, Mopalia ciliate, and Mopalia muscosa. |
313 | Chitons. Fissurella volcano, Stenoplax heathiana, and Tonicella lineata. |
314 | Chitons. Placiphorella velata, Nuttalina californica, and Cryptochiton stelleri. |