214 Dr- W. Kobelt: 



— (2). Helicinenstudien. Monographie der Genera Palaeo- 

 helicina A. J. Wagner und Helicina Lamarck. — In: Denkschr. 

 matli. naturw. Klasse Akad. Wien, vol. LXXVIII p. 203—248. Mit 

 5 Tafeln. Wien 1905. 



Wagner, G. On an interesting fossil Unio from Wisconsin. — 

 In: Nautilus, vol. 18 p. 97—100, pl. VII. 



Walker, B. List of shells from Northwestern Florida. — In: 

 Nautilus, vol. 18 p. 133—136, pl. 9. 



— (2). A new species of Medionidus. — Ibid. p. 136, 137, 

 pl. 10. 



— (3). the origin and distribution ol the land and freshwater 

 Mollusca of North America. — In: Rep. Michigan Acad. vol. I 

 p. 43—46. 



Webster, W. H. Some new species of New Zealand marine 

 Shells together with remarks on some non marine species, and 

 some additions to the „Index faunae". — In: Transact. New Zealand 

 Inst. vol. 37 p. 276—280, pl. 9 u. 10. 



Welch, R. Freshwater Shells in Masses of Shell-Mari. — In: 

 J. of Conch. Leeds vol. II p. 191. 



— (2). Helix (Helicella) zaccarensis Kobelt. — In: Rep. Belfast 

 Club, vol. 5 p. 222, 223. 



White, C. A. The ancestral origine of the North American 

 Unionidae. In: Smithsonian Miscell. Collection XLIII p. 75 — 88, 

 pl. 26—31. 



Whiteaves, J. F. A new species of Goniobasis (columbiensis) 

 from British Columbia. — In: Nautilus, vol. 19 p. 



— (2). Notes on some fresh-water shells from the Yukon 

 territory. — In: Nautilus, vol. 19 p. 1 — 3 & Ottawa Naturalist, 

 vol. 19 p. 63—65. 



— (3). List of a few land- and freshwater shells from the 

 immediate vicinity of James Bay, Hudson Bay. Ibid. p. 4 (resp. 

 p. 66). 



— (4). Some new localities for Canadian land- and freshwater 

 shells. — In: Ottawa Naturalist vol. 19 p. 169 — 171. 



— (5). List of Land- and Freshwater Shells from the District 

 of Keewatin, collected by M. Mac Innes in 1904. — In: Report 

 Geol. Survey Canada 1904 p. 160-164. 



Wiegmann, Fritz. Verdoppelung eines Auges bei einer Helix. 

 — In: Nachrbl. D. mal. Ges. vol. ;i7 p. 35—38. Mit Textfig. 



— (2). Die Genera Helicella Fer. und Buliminus Ehrbg. — 

 Ibid. p. 185—109. 



Willcox, M. A. Homing of Fissurella and Siphonaria. — In: 

 Science, vol. 22 p. 90, 91. 



— (2). Biologie of Acmaea testudinalis, Müll. — In: American 

 Naturalist vol. 39 p. 325—333. 



Williamson, E. B. Odonata, Astacidae and Unionidae, 

 collected along the Rockcastle River at Livingston, Kentucky. — 

 In: Ohio Naturalist, vol. 5 p. 309-412. 



