Volume 42 Number 4 (April 11, 1929)
- H. A. PILSBRY. Neverita reclusiana (Desh.) and its allies: 109–113
- H. A. PILSBRY. Cyphoxis rafinesque, a cretaceous taxodont identical with Idonearca Conrad: 113–114
- C. GOODRICH. The nomenclature of ecological varieties: 114–118
- J. HENDERSON. Some fossil fresh-water Mollusca from Washington and Oregon: 119–123
- R. V. CHAMBERLIN and E. BERRY. Notes of the Mollusca of southeastern Utah: 123–125
- E. D. CRABB. Egg laying and birth of young in three species of Viviparidae: 125–129
- H. G. RICHARDS. Freshwater snails in brackish water: 129–130
- F. C. BAKER. Mollusca from Vermilion and Pelican Lakes, Minnesota, with the description of a new variety of Helisoma corpulenta (continued): 131–136
- H. B. BAKER. Nomenclature in the genus Vitrina: 137–139
- Notes and news: 139–143
- Publications received: 143–144
Volume 42 Number 3 (January 15, 1929)
- T. D. A. COCKERELL. The genus Placostylus in New Caledonia: 73–78
- H. A. PILSBRY. New Cuban species of Caracolus: 78–80
- J. HENDERSON. Some new forms of non-marine Mollusca from Oregon and Washington: 80–82
- C. W. JOHNSON. Are certain marine pelecypods becoming locally extinct?: 82–86
- H. B. BAKER. New southern Appalachian land snails: 86–93
- H. S. COLTON. Fossil fresh water shells from Winona, Coconino County, Arizona: 93–94
- F. C. BAKER. Mollusca from Vermilion and Pelican Lakes, Minnesota, with the description of a new variety of Helisoma corpulenta: 95–97
- D. A. WELCH. Some operculate snails from northwestern Camaguey, Cuba: 98
- I. S. OLDROYD. Description of a new Coralliophila: 98–99
- T. D. A. COCKERELL. A new snail from Catalina Island, California: 99–100
- K. F. MEYER. Mussel poisoning in California: 100–101
- W. J. CLENCH. Manly D. Barber: 101–102
- Notes: 102–105
- Publications received: 105–108
Volume 42 Number 2 (October 25, 1928)
- G. WILLETT. Notes on some Pacific Coast Acteocinas, with descriptions of one new subspecies: 37–38
- O. O. NYLANDER. Acmaea testudinalis Müll. in Cabscook Bay, Eastport, Maine: 38–39
- J. R. B. TOMLIN. On Engina zonata of Gray and of Reeve: 40
- P. BARTSCH. Odostomia (Ividella) mariae, new species: 41–42
- H. A. PILSBRY. Helix nemoralis L. in Ontario: 42–43
- H. B. BAKER. North American Veronicellidae: 43–48
- F. C. BAKER. The Mollusca of Chautauqua Lake, New York, with descriptions of a new variety of Ptychobranchus and of Helisoma: 48–60
- H. A. PILSBRY. Sherwood Raymond Roberts, 1845–1928: 60–61
- R. MEANWELL. Henry Clifden Burnup, born April 21, 1852, died April 23, 1928: 62–63
- H. A. PILSBRY. Dr. Antoni J. Wagner: 63
- J. HENDERSON. Correspondence: 64–65
- Notes: 65–69
- Publications received: 69–72
Volume 42 Number 1 (July 14, 1928)
- A. M. STRONG. Notes on microscopic shells from Newport Bay, California: 1–4
- N. M. TEGLAND. Pitaria ida, a new recent species from Sitka, Alaska: 4–6
- C. W. JOHNSON. A review of certain species of the Olividae: 6–13
- A. MOZLEY. New records of western Canadian Mollusca: 13–18
- A. MOZLEY. Note on some fresh water Mollusca inhabiting temporary ponds in western Canada: 19–20
- E. G. VANATTA. Land shells of Alachua Co., northeastern Florida: 20–21
- W. B. MARSHALL. Strophocheilus (Borus) globosus Martens: 21–22
- V. STERKI. Sphaeriidae, Palearctic and Nearctic - II: 23–27
- C. GOODRICH. The group of Goniobasis catenaria: 28–32
- H. A. PILSBRY. William D. Averell: 33
- C. W. JOHNSON. Fred L. Button: 33–34
- T. WILLARD. The Boston Malacological Club: 34–35
- Notes: 35-36
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