2 1 6 NATURALISTS' ASSISTANT. 



Sraitt, F. A. Scandinavian Marine Polyzoa. 5 pts., 4to, 24 

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Vogt, C. Siphonophora and Tunicata of Nice. 2 vols. , 4to, 27 

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WORMS. 



Audouin et Milne-Edwards. Researches in Nat- 

 ural History of France. 2 vols., 8vo, 25 pis. Paris, 

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Audouin et Milne-Edwards. Classification of Annelides. 8vo, 

 18 pis. Paris, 1834. (Fr.) 



Baird, W. Catalogue of Entozoa in British Museum. 

 8vo. London, 1853. 



Van Beneden, C. J. Memoire sur les Vers Intestinaux. 

 4to, 27 pis. Paris, 1861. (Fr.) 



Van Beneden, C. J. Turbellarians of Belgium. 4to. Brus- 

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Van Beneden et Hesse. Marine Bdellidae and Trematoda. 

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Claparede, E. Annelida Chaetopoda of Naples. 

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Cobbold, T. S. Entozoa. 8vo. London, 1879. 



Diesing, C. M. Systerna Helminthum. 2 vols., 8vo. 

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D'udekem. New classification of the setigerous Annelid 

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Dujardin, P. Natural History of the Helminthes. 

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Ehlers, E. Die Borstenwiirmer, Annelida Chseto- 

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Hubrecht, A. W. Genera of European Nemerteans critically 

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