Volume 19 Number 12 (April 5, 1906)
- S. S. BERRY. Note on a new variety of Cerithidea sacrata Gld., from San Diego, Cal.: 133
- V. STERKI. Additional notes on Bifidaria pentodon and B. tappaniana: 134–135
- D. D. BALDWIN. Description of new species of Achatinellidae from the Hawaiian Islands: 135–138
- G. H. CLAPP. Notes on Carychium and description of a new variety: 138–140
- W. A. NASON. A new subspecies of Polygyra multilineata Say: 141–142
- F. C. BAKER. Lymnaea hinkleyi n. sp.: 141–143
- Notes: 143–144
- Publications received: 144
Volume 19 Number 11 (March 9, 1906)
- E. G. VANATTA and H. A. PILSBRY. On Bifidaria pentodon and its allies: 121–128
- D. BLANEY. Dredging in Frenchman’s Bay, Maine: 128–130
- H. A. PILSBRY. Shells of Grant, Valencia Co., New Mexico: 130
- W. H. DALL. On a new Floridian Calliostoma: 131–132
Volume 19 Number 10 (February 8, 1906)
- H. A. PILSBRY. Vitrea rhoadsi and Succinea retusa magister: 109
- D. BLANEY. Shell-bering Mollusca of Frenchman’s Bay, Maine: 110–111
- D. D. BALDWIN. Description of new species of Achatinellidae from the Hawaiian Islands: 111–113
- B. WALKER. New and little known species of Amnicolidae (continued): 114–117
- V. STERKI. New varieties of North American Pisidia - 2 (continued): 118–120
- Notes and news: 120
Volume 19 Number 9 (January 6, 1906)
- B. WALKER. New and little known species of Amnicolidae: 97–100
- T. D. A. COCKERELL. A new tertiary Planorbis: 100–101
- P. E. RAYMOND. An Ordovician gastropod retaining color markings: 101–102
- G. H. CHADWICK. Shells of Prince Edward Island: 103–104
- W. H. DALL. Note on some forgotten mollusk-names: 104–105
- C. W. JOHNSON. Samuel Hart Wright: 105–106
- Notes: 107–108
- Publications received: 108
Volume 19 Number 8 (December 8, 1905)
- H. S. COLTON. Some notes on living Strombus pugilis: 85–88
- W. H. DALL. A new Chiton from the New England coast: 88–90
- H. A. PILSBRY. A new brackish-water snail from New England: 90–91
- G. H. CLAPP. Carychium nannodes n. sp.: 91
- H. A. PILSBRY. Is Cochliopa rowelli a Californian shell?: 91–92
- Publications received: 92–95
- Notes: 96
Volume 19 Number 7 (November 4, 1905)
- G. H. CLAPP. Descriptions of two new forms of Polygyra: 73–74
- S. ROUS. On some Cypraeidae in the collection of Mr. D.W. Ferguson, of Brooklyn, with descriptions of several new varieties: 75–78
- W. H. FLUCK. Shell collecting on the Mosquito Coast of Nicaragua - V: 78–80
- V. STERKI. New varieties of North American Pisidia: 80–84
- T. D. A. COCKERELL. General Notes: 84
Volume 19 Number 6 (October 13, 1905)
- J. F. WHITEAVES. Description of a new species of Goniobasis, from British Columbia: 61–62
- L. E. DANIELS. Notes on the semi-fossil shells of Posey County, Indiana: 62–63
- H. A. PILSBRY. Notes on Moellendorffia and Stegodera: 63–67
- J. H. FERRISS. A new subspecies of Polygyra ferrissi: 67
- T. D. A. COCKERELL. The snails of New Mexico and Arizona: 68–71
- Publications received: 71–72
Volume 19 Number 5 (September 9, 1905)
- L. S. FRIERSON. Notes on young Unionidae: 49–50
- M. B. WILLIAMSON. New varieties of Crepidula rugosa Nutt. found on Natica and on Norrisia: 50–51
- F. C. BAKER. A new species of Lymnaea from Ohio, with notes on Lymnaea parva Lea: 51–53
- V. STERKI. Vertigo perryi, n. sp.: 53–54
- W. H. FLUCK. Shell collecting on the Mosquito Coast of Nicaragua - IV: 55–57
- G. H. CHADWICK. List of Wisconsin shells: 57–60
- Publications received: 60
Volume 19 Number 4 (August 5, 1905)
- H. A. PILSBRY. Land shells of the Florida Keys: 37–41
- J. ROWELL. A new Californian Helix: 41–42
- C. F. ANCEY. Remarks on some land and fresh-water shells from the New Hebrides, with description on new species: 42–46
- T. D. A. COCKERELL. A fossil form of Oreohelix yavapai, Pilsbry: 46–47
- Notes and news: 47–48
- Publications received: 48
Volume 19 Number 3 (July 10, 1905)
- G. H. CLAPP. Polygyra decepta n. sp.: 25–26
- W. H. DALL. Note on a variety of Crepidula nivea C. B. Adams, from San Pedro, California: 26–27
- F. C. BAKER. Notes on a collection of shells from Bass Lake, Indiana: 27–28
- H. A. PILSBRY. A new species of Succinea: 28–29
- S. ROUS. On some new varieties of Cypraea: 29
- V. STERKI. Cycladidae of the southern states: 30–32
- W. H. FLUCK. Shell collecting on the Mosquito Coast of Nicaragua - III: 32–34
- Notes: 34–35
- Publications received: 35–36
Volume 19 Number 2 (June 5, 1905)
- L. S. FRIERSON. New Unionidae from Alabama: 13–14
- W. H. DALL. Two undescribed Californian shells: 14–15
- W. H. FLUCK. Shell-collecting on the Mosquito Coast of Nicaragua - II: 16–19
- H. HEMPHILL. A second contribution to West Coast conchology - II: 19–24
- Publications received: 24
Volume 19 Number 1 (May 9, 1905)
- J. F. WHITEAVES. Notes on some fresh-water shells from the Yukon Territory: 1–3
- J. F. WHITEAVES. Lists of a few species of land and fresh-water shells from the immediate vicinity of James Bay, Hudson Bay: 4
- H. HEMPHILL. A second contribution to West Coast conchology - I: 5–8
- W. H. FLUCK. Shell-collecting on the Mosquito Coast of Nicaragua: 8–12
- Notes: 12
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