32 PRANK E. BEDDARD 



Literature. 



1. Beddard. — " Further Contributions to the Anatomy of the Sperm 



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2. Kiikenthal. — " Walthiere " in 'Denksch. nat. Ges. Jena', Th. ii, 1893. 



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' Bibl. Zool.', vi, 1895, Heft 17. 



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Arch. Mus.' (3) i, 1889. 



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ibid., Ii. 

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ibid., 1896, p. 557. 



