THE NAUTILUS. 



Harford, W. G. W. (obituary) 8 



Harpa, The nomenclature of . . . . .65 



Helix (Dentellaria) badia Fer., New color varieties . 48 



Helix badia var. roseolabrum Smith, n. var. . . .48 

 Helix badia var. unicolor Smith, n. var. . . .48 



Helix hortensis var. dichroa Ckll. n. n. for bicolor Ckll 



not Picard ....... 



Helix hortensis on Long Island, N. Y., etc. 

 Hyridella australis (Lamarck), Anatomy of 

 Keep, Professor Josiah (obituary and portrait). 

 Lampsilis discus Lea ..... 



Leptothyra grippii Dall, n. sp. . . . 



Limax maximus on Nantucket Island 

 Locomotive disk of Stylommatophora 

 Lymnaea auricularia in Ohio .... 



Lymnaea auricularia in Canada 

 Lymnaea florissantica, Note on. 

 Lymnseidse of Aroostook County, Maine . 

 Lymnium, The use of the generic name . 

 Maine pearls ....... 



Margaritana margaritifera L. . 

 Margaritana monodonta Say, Distribution of 

 Margaritana, The use of the generic name. 

 Margaritanidffi Ortmann ..... 



Maryland, Land mollusks of Garret County 

 Mesomphix laevigata latior Pils. 



Modiolus demissus var. plicatulus in Brookline, Mass 

 Mollusks of Wellesley Island and vicinity, St. Lawrence 



River ........ 



Mytilopsis Conrad ...... 



Musculium declive Sterki, n. sp. . . . 



Naiad, A new North American .... 



Naides, The classification of the European. 



Naticidae and Scalarida?, New Japanese 



New Jersey, Land shells of Atlantic City . 



Notes . 11, 24, 36, 48, 59, 83, 94, 120, 132 



Omphalina kopnodes W. G. Binn. ..... 124 



Opeas gracile (Hutton) in the United States . . 114 



Oreohelix, Notes on 18, 133 



Oreohelix cooperi W. G. B 138 



60 



92, 96 



100 



61 



36 



25 



60 



62 



11 



60 



24 



107 



88 



120 



120 



57 



88 



6 



111 



125 



132 



66 

 95 

 103 

 98 

 5, 21 

 32 

 35 



