Volume 40 Number 4 (April 29, 1927)
- H. A. PILSBRY. Arnold Edward Ortmann: 109–111
- C. W. JOHNSON. Addison Emery Verrill: 111–112
- E. G. VANATTA. Land and fresh-water shells from Newfoundland: 112–114
- F. C. BAKER. Descriptions of new forms of Pleistocene land mollusks: 114–120
- W. J. CLENCH. A new subgenus and species of Bulinus from Japan: 121–122
- S. S. BERRY. A new Oregonian subspecies of Monadenia fidelis: 122–124
- G. D. HANNA. Exact localities of certain California land shells: 124–125
- H. A. PILSBRY. Nomenclature of Leuconia, Melampus and Truncatella: 125–126
- F. A. SCHILDER. Three new varieties of Cypraea: 126–129
- H. C. HIGGINS. Notes on some species of Cypraea: 129–130
- J. R. Le B. TOMLIN. Streptostyla chiriquiana and S. viridula: 130–131
- G. H. CLAPP. A new variety of Auris aurissciuri (Guppy): 131–132
- H. A. PILSBRY. Annie E. Law: 132–133
- D. THAANUM. Foreign shells imported into the Hawaiian Islands: 133–134
- Notes and news: 134–139
- Publications received: 139–144
Volume 40 Number 3 (February 1, 1927)
- H. A. PILSBRY. Cuban land shells of The Lowe-Hand-Emery Expedition Plate I: 73–75
- J. HENDERSON. Mollusk notes from the Northwest: 75–78
- H. A. PILSBRY. The races of Helminthoglypta ayresiana: 78–79
- H. A. PILSBRY. A new subspecies of Planorbis: 79–80
- J. HENDERSON. Conchological notes from the Hawaiian Islands: 80–82
- F. C. BAKER. New varieties of Stagnicola from Wisconsin and Wyoming: 82–85
- F. C. BAKER. New varieties of Helisoma antrosa from Wisconsin and Minnesota: 85–87
- E. E. HAND. A list of land shells collected in Cuba in July, 1926: 88–91
- N. M. GRIER. Notes on the naiades of Long Island: II. Anodonta cataracta on Long Island: 91–93
- C. W. JOHNSON. Helix nemoralis in Massachusetts: 93–94
- Anon. Charles Hedley: 94–96
- E. G. VANATTA. Dates of publication of the Manual of Conchology, first series (Cephalopoda, Marine Gastropoda, Polyplacophora, Scaphopoda): 96–99
- Anon. An Index to The Nautilus: 99
- Notes and news: 99–103
- Publications received: 104–108
Volume 40 Number 2 (October 22, 1926)
- E. E. HAND. Seeking land shells in Cuba: 37–41
- J. GARDNER. The nomenclature of the superspecific groups of Corbula in the Lower Miocene of Florida: 41–47
- E. G. VANATTA. Land shells from around Foul Rift, Delaware River: 47–48
- F. C. BAKER. Fresh water Mollusca from White Lake, Oakland County, Michigan: 49–52
- J. R. Le B. TOMLIN. Note on Donax conradi Deshayes: 52–53
- A. MOXLEY. Preliminary list of mollusca of Jaspar Park, Alberta: 53–56
- A. MOXLEY. Some mollusks from western Canada: 56–63
- H. B. BAKER. Correspondence from Mexico: 63–65
- W. J. CLENCH. Some notes and a list of shells of Rio, Kentucky (continued): 65–67
- W. H. DALL. A new Pecten from the Loochoo Islands: 67
- Notes and news: 68–71
- Publications received: 71–72
Volume 40 Number 1 (July 12, 1926)
- H. A. PILSBRY. James H. Ferriss, November 18, 1849–March 17, 1926: 1–6
- W. J. CLENCH. Some notes and a list of shells of Rio, Kentucky: 7–12
- W. P. WOODRING. Fossil Viviparus-like calcareous opercula: 12–14
- G. D. HANNA. Further notes on Scalez petrolia: 14–16
- E. G. VANATTA. Texas land and fresh water shells: 16–17
- P. F. A. SCHILDER. An interesting radula (Eocypraea adamsonii Sow.): 17–18
- E. W. BERRY. Two new species of Dentalium from the Eocene of Peru: 19–20
- C. W. JOHNSON. A list of the Mollusks collected by Mr. Owen Bryant along the coasts of Labrador, Newfoundland and Nova Scotia: 21–25
- V. STERKI. Sphaeriidae Palearctic and Nearctic: 26–30
- Notes and news: 30–34
- Publications received: 34–36
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