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27. "Notes on Prosobranchiata No.i.". loc. cit. 



Vol.xxvii., 1902. 



28. "Notes on Prosobranchiata No.ii." loc. cit. 



Vol.xxvii., 1903. 



29. — — — ■ — — "Notes on Prosobranchiata No. iii. lor. rif. 



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30. "Notes on Prosobranchiata No. iv. lor. rif. 



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33. KoRSCHELT, E., & Heider, K. — Text-Book of the Embryology 



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34. Op. cit. Part iv., 1900. 



35. L.\NKESTER, Sir E. Ray.— Ency. Brit., edit. 9, xvi., p. 639, and p. 



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36. Loeb, Jaques. — "Studies in General Physiology" (Decennial 



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