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Grube, E. 



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1878. Annulata Semperiana; Beitrage zur Kenntnis der Annelid en- fauna der 



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 Johnson, H. P. 



1897. A preliminary account of the marine annelids of the Pacific Coast, 

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 Joyeux-Laffuie, J. 



1890. Etude monographique du Chetoptere (Chaetopterus variopedatus 

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 Levinson, G. M. R. 



1883. Systematik-geografisk oversigt over de nordiske Annulata, Gephyrea, 

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 McIntosh, W. C. 



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 Malmgren, a. J. 



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Marenzellar, E. von. . 



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1902. Idem. III. Aphroditea, Eunicea. Ibid., 41, 563-582, 3 pis. 



Moore, J. P. 



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1904. New Polychaeta from California. • Ibid., 56, 484-503, pis. 37, 38. 

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Alaskan waters. Ibid., 57, 525-554, pis. 34-36. 

 1905b. Five new species of Pseudopotamilla from the Pacific Coast of North 

 America. Ibid., 57, 555-569, pi. 37. 



