Contents of Volume 12 (1898–1899)

Volume 12 Number 12 (April 3, 1899)

• S. N. RHOADS. On a recent collection of Pennsylvania mollusks from the Ohio River system below Pittsburg [sic]: 133–138
• W. H. DALL. A new Pteronotus from California: 138–139
• L. S. FRIERSON. How uniones emigrate: 139–140
• H. A. PILSBRY. Descriptions of new American land shells: 140–142
• Anonymous. Isaac Lea Department: 142–143
• General notes: 144

• H. A. PILSBRY. Catalogue of the Amnicolidae of the Western United States: 121–127
• W. H. DALL. On a new species of Drillia from California: 127
• V. STERKI. New Pupidae: 127–129
• Anonymous. In Memoriam - Edward W. Roper: 129–130
• T. D. A. COCKERELL. Another new snail from New Mexico: 131
• General notes: 131
• Anonymous. Isaac Lea Department: 132

• P. B. RANDOLPH. Collecting shells in the Klondike Country: 109–112
• R. E. C. STEARNS. Urosalpinx cinereus in San Francisco Bay: 112–113
• H. A. PILSBRY. Potamolithus jacuhyensis, n. sp.: 113
• H. A. PILSBRY. Remarks on the American species of Conulus: 113–117
• V. STERKI. Some studies on the morphology of the Cycladidae: 117–119
• General notes: 119–120

• J. H. FERRISS. Collecting in the Great Smokies: 97–101
• H. A. PILSBRY. New American land shells: 101–104
• A. H. COOKE. In memoriam - M. H. Crosse: 104–106
• R. E. C. STEARNS. Preliminary description of a new variety of Haliotis: 106–107
• General notes: 107
• Publications received: 108

• H. A. PILSBRY. Descriptions of new species and varieties of American Zonitidae and Endodontidae: 85–87
• V. STERKI. Anodonta imbecillis, hermaphroditic: 87–88
• F. W. KELSEY. San Diego, California, as a collecting ground: 88–90
• V. STERKI. New species of Bifidaria: 90–92
• C. F. ANCEY. Note on the generic names of two groups of Achatinidae: 92
• B. H. WRIGHT. A new Unio from Texas: 93
• Recent publications received: 93–95
• Notes and news: 95–96

• J. B. HENDERSON, JR. Shell collecting at Mt. Desert, Maine: 73–74
• W. H. DALL. A new Polygyra from New Mexico: 75
• W. H. DALL. Description of a new Ampullaria from Florida: 75–76
• T. D. A. COCKERELL. New polygyras from White Mountain, New Mexico: 76–77
• V. STERKI. New Pisidia: 77–79
• H. A. PILSBRY. Haliotis cracherodii var. Californiensis Swainson: 79–80
• S. R. ROBERTS. C. E. Beddome: 80
• General notes: 80–81
• Publications received: 81–84

• B. WALKER. William Henry DeCamp: 61-63
• F. C. BAKER. A day on the Chicago Drainage Canal: 63–65
• F. C. BAKER. A new Sphaerium: 65–66
• J. FORD. Description of a new species of Olivella: 66–67
• M. B. WILLIAMSON. An interrogation in regard to Septifer bifurcatus Rve., and Mytilus bifurcatus Conr.: 67–69
• H. A. PILSBRY and W. J. RAYMOND. Note on Septifer bifurcatus Conrad: 69–71
• Notes and news: 71–72
• New publications received: 72

• V. STERKI. Bifidaria ashmuni, a new species of Pupidae: 49–50
• H. A. PILSBRY. Notes on a few chitons: 50–51
• C. F. ANCEY. List of marine shells collected at Port Gueydon, Kabylia, with description of a new Cyclostrema: 52–57
• H. A. PILSBRY. Notes on the genus Odontostomus: 57–58
• Anonymous: Postage on natural history specimens to foreign countries: 58–59
• General notes: 59–60
• Publications received: 60

• Anonymous. The mollusks of the Great African Lakes: 37–39
• W. H. DALL. On a new species of Myllita: 40–41
• E. R. SYKES. Note on Ischnochiton oniscus Krauss and I. Elizabethensis Pilsbry: 41–42
• H. A. PILSBRY. Notes on new and little-known Amnicolidae: 42–44
• W. H. DALL. A new species of Terebra from Texas: 44–45
• General notes: 45–47
• Recent publications: 47–48

• J. B. HENDERSON, JR. A new Jamaican land shell: 25–26
• H. A. PILSBRY. Land shells of Gun Cay, Bahamas: 26–27
• W. H. DALL. A new species of Ceres from Mexico: 27–28
• V. STERKI. Some observations on the genital organs of Unionidae, with reference to classification (concluded): 28–32
• B. H. WRIGHT. A new Unio: 32–33
• Recent Publications: 33–36
• General notes: 36

• J. B. HENDERSON, JR. A list of land and fresh water shells of Enganio with descriptions of new species: 13–17
• V. STERKI. Some observations on the genital organs of Unionidae, with reference to classification: 18–21
• C. F. Ancey. Description of a new Helix: 21–22
• H. A. PILSBRY. Notices of new species and varieties of American land shells: 22–23
• Notes and news: 23–24

• T. H. ALDRICH. Notes on some land and freshwater shells from Sumatra, with descriptions of new species: 1–4
• W. H. DALL. On a new species of Fusus from California: 4–5
• B. H. WRIGHT. New Unionidae: 5–6
• Anonymous. Isaac Lea Department: 5–9
• General notes: 9–10
• Recent publications: 10–12