TITLES. 
Moll. 
33 
574. Vincent, E. Description de deux especes nouvelles de Mollusques 
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Bull. pp. cxxvi-cxxix, figg. 
575. Volz, W. Beitrage zur geologischen Kenntniss von Nord-Sumatra. 
Zeitschr. Deutsch. geol. Ges. li, pp. 1-61, pis. i-v. 
576. Waagen, L. Der neue Fundort in den Hallstatter Kalken des 
Berchtesgadener Versuchsstollens. Jahrb.' geol. Reichsanst. xlix, 
pp. 545-558, figg. 
577. * Walker, B. The Terrestrial Mollusca of Michigan. Detroit, Mich. 
8vo, 1899, 27 pp. 
578. Walther, J. Ueber den Transport von Ammoniten-Schalen. Zeit¬ 
schr. Deutsch. geol. Ges. 1, p. 595. 
579. Washburn, F. L. Hermaphroditism in Ostrea lurida. Science ix, 
pp. 478 & 479, figg. 
Webb, W. M. [See Moss & WYbb (339).] 
580. Weiss, A. Die Conchylienfauna der Iviese von Siissenborn bei 
Weimar. Zeitschr. Deutsch. geol. Ges. li, pp. 156-167. 
581. Weller, S. The Batesville Sandstone of Arkansas. Tr. N. York 
Ac. xvi, pp. 251-282, pis. xix-xxi. 
582. Wenjukow, P. FT. Die Fauna der siluriscken Ablagerungen des 
Gouvernements Podolien. Mater. Geol. Russ, xix, pp. 21-256, 
pis. i-ix. 
In Russian with resume in German, pp. 257-266. 
583. Westerlund, C. A. Planorbis libanicus, n. sp. [from Syria]. 
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584. Whitfield, R. P. Catalogue of the types and figured specimens in 
the Palaeontological collection of the Geological department, American 
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188. 
By error the reference to the first part of the paper in 1898 was given to 
vol. ix in place of xi. 
585. Willey, A. General account of a Zoological expedition to the 
South Seas during the years 1894-1897. [Notes on Nautilus .] P. 
Zool. Soc. London 1899, pp. 7-9. 
586. Wtlliaaison, M. B. Helix ( Epiphragmophora ) kelletti , Forbes, and 
its habitat. J. Malac. vii, 1899 [1900], pp. 87 & 88. 
587. Wohlberedt, G. Molluskenfauna des Konigreichs Sachsen. Nachrbl. 
Deutsch. malak. Ges. 1899, pp. 1-20, 33-56, 97-112. 
588. Wolterstorff, W. Das Untercarbon von Magdeburg-Neustadt und 
seine Fauna. Jahrb. geol. Landesanst. Berlin xix, pp. 3-64, pis. ii & iii. 
589. V r 00DS, H. A Monograph of the Cretaceous Lamellibranchia of 
England. Part I. Nuculanidce, Nucididce , Anomiidce , and Arcidce , 
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590. -. Note on the Genus Grammatodon, Meek and Hayden. Ann. 
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Woodward, B. B. [See Kenxard & W t oodward (241, 242).] 
591. W oodward, M. F. Some account of the synonymy and affinities of 
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figff. 
