LITERATURE. 581 



16. LWOFF, B. Ueber Ban and Entwickhmg der Chorda von Amphi- 



oxus. Mittheil. ZooL Stat.Neaprl. Bd. ix. 1889. 



17. LWOFF, B. Ueber einige wichtige Punkte in der Entwicklung 



des Amphioxus. BioL Cvntralhl. Bd. xii. 1892. 



18. SCHULTZE, M. Beobachtung junger Exemplare von Amphioxus. 



Zeitschr. f. wins. ZooL Bd. iii. 1851. 



19. SPENGEL, J. W. Beitrage zur Kenntniss der Kiemen des 



Amphioxus. ZooL Jahrb. Abth. f. Anat. Bd. iv. 1890. 



20. WEISS, F. E. Excretory Tubules in Amphioxus lanceolatus. 



Quart. Jouru. Micro. Sci. (2). Vol. xxxi. 1890. 



21. VAN WIJHE, J. W. Die Kopfregion der Cranioten bei Amphioxus, 



etc. Anat. Am. Jahrg. iv. 1889. 



22. VAN WIJHE, J. W. Ueber Amphioxus. Anat. Am. Jahrg. viii. 



1893. 



23. WILLEY, A. The Later Larval Development of Amphioxus. 



Quart. Jo urn'. Micro. Sci. Vol. xxxii. 1891. 



23a. WILSON, E. B. On Multiple and Partial Development in 

 Amphioxus. Anat. Anz. Jahrg. \ii. 1892. 



On the Phylogeny of the Chordata. 



24. BALFOUR, F. M. A Monograph on the Development of Elasmo- 



branch Fishes. London, 1878. 



25. BALFOUR, F. M. A Treatise on Comparative Embryology- 



Vol. ii., chap, xii., p. 258. 1881. 



26. BATESON, W. The Ancestry of the Chordata. Quart. Journ. 



Mln-o. Sci. (2). Vol. xxvi. 1886. 



27. BEARD, J. The Old Mouth and the New. A Study in Verte- 



brate Morphology. Anat. Anz. Jahrg. iii. 1888. 



28. BEARD, J. Some Annelidan Affinities in the Ontogeny of the 



Vertebrate Nervous System. Nature. Vol. xxxix. 1889. 



29. VAN BENEDEN, E. ET JULIN, CH. Recherches sur la Morpho- 



logic des Tuniciers. Archiv. Biol. Tom. vi. 1887. 



30. DOHRN, A. Der Ursprung der Wirbelthiere und das Princip 



des Functionswechsels. Leipzig, 1885. 



31. DOHRN, A. Studien zur Urgeschichte des Wirbelthierkorpers. 



Nos. 1 and 2 in Mittheil. ZooL Stat. Neapel. Bd. iii. 1882. 



No. 3, ibid. Bd. iv. 1^83. Nos. 4, 5, 6, Und. Bd. v. 



1S84. Nos. 7, 8, 9, 10, ibid. Bd. vi. 1886. Nos. 11, 12, 



ibid. Bd. vii. 1886-87. Nos. 13, 14, ibid. Bd. viii. 1888. 



No. 15, ibid. Bd. ix. 1889-91. Nos. 16, 17, ibid. Bd. x. 

 1801. 



