49 Mollusca für 1911. 
Pelseneer, Paul. Les Lamellibranches de l’Expedition du Sıboga. 
Partie Anatomique. In: Resultats des Explorations ete. Monogr. 53, 
Livr. 61, 125 pp., 26 Taf. 
— (2) siehe Caullery und Pelseneer. 
Petersen, €. G. Johannes. Some Experiments on the Possibility 
ofcombating the harmful Animals ofthe Fisheries, especially the Whelks 
in the Limfjord. In: Report of the Danish Biolog. Station to the 
Board of Agriculture. vol. 19 (1911). 20 pp., 9 Fig. 
Petersen, €. 6. Joh. und P. Boysen-Jensen. Valuation of the Sea. 
1. Animal Life of the Sea-Bottom, its food and quantity (Quantitative 
Studies). In: Report of the Danish Biolog. Station to the Board of 
Agriculture, vol.20 (1911). 81 pp., 6 Taf., 4 Karten, 6 Tabellen. 
Pfeffer, Julius (1). Beiträge zur Molluskenfauna Deutschlands. 
In: Nachrbl. d. malak. Ges. Jhrg. 43, p. 59—67. 
— (2). Zur Kenntnis der Ausbreitung der Petricola pholadiformis 
Lam. In: Nachrbl. d. malak. Ges., Jahrg. 43, p. 67—69. 
- — (8). Anpassung an ungünstige Verhältnisse. In: Nachrbl. d. 
malak. Ges., Jahrg. 43, p. 70—71. 
Phillips, R. A. Helix cantiana intruduced in Cork. In: Irish Na- 
turalist, vol. 20, p. 15. 
% Pilsbry, Henry A. (1). The Distribution of Oahuan Species of 
Amastra. In: The Nautilus, vol. 25, p. 13—17. 
— (2). Land Shells of Atlantie City, New Jersey. In: The Nau- 
tilus, vol. 25, p. 34—85. 
— (6). New Japanese Naticidae and Scalariidae. In: The Nau- 
tilus, vol. 25, p. 32—34, 41-42. 
— (4). Chiton aureus Spalowsky. In: The Nautilus, vol.25, p. 36. 
— (5). Land-Shells of Monroe Co., Pennsylvania. In: The Nau- 
tilus, vol. 25, p.75. 
— (6). On the Type of Congeria. In: The Nautilus, vol. 25, p. 95 
—H. 
— (7). Helix hortensis on Long Island, N.Y. In: The Nautilus, 
vol. 25, p. 96. 
— (8). Notes on the Anatomie and Classification of the Genera 
Omphalına and Mesomphix. In: Proc. Acad. Nat. Sc. Philadelphia, 
vol. 63, p. 469—486, Taf. 37—39. 
— (9). A new Indian Zueiroa. In: Proc. Philad. Acad., vol. 63, 
p. 523—524. 
— (10). New Amnicolidae of the Panuco river system, Mexico. 
In: The Nautilus, vol. 23, p. 97—100. Taf. 9. 1910. 
— (11). Land Mollusca ofthe Panama Canal Zone. In: Proc. Acad. 
Nat. Sci. Philadelphia, vol. 62, p. 502—509. 1910. 
— (12). A new species of Marinula from near the head of the 
Golf ofCalifornia. In: Proc. Acad. Nat. Sci. Philad. vol.62p.148. (1910). 
— (13). siehe Hyatt und Pilsbry. 
Pilsbry, H. A. und Brown, A.P. (1). The Land Mollusca of Montego 
Bay, Jamaica; with notes on the Land Mollusca ofthe Kingston Region. 
In: Proc. Acad. Nat. Sci. Philad., vol. 63, p. 572—588. 
