90 MOLLUSCOIDA. 



4. Fowler, G. H. The Morphology of Bhabdopleura Normani 



Allm. Festschrift filr R. Leuckart. Leipzig, 1892. And 

 Proc. Roy. Soc. London. Yol. clxxxviii. 



5. Hatschek, B. Ueber Entvvicklung von Sipunculus nudus. 



Arb. Zool. Inst. Wien. Bd. v. 1884. 



6. Hatschek, B. Lehrbuch der Zoologie. Jena, 1888. Part \. y 



p. 40. 



7. Lang, A. Zum Verstandniss der Organisation von Cephalo- 



discus dodecalophus M'Int. Jen. Zeitschr. f. Nat. Bd. xxv. 



8. Lankester, E. Ray. Article, Polyzoa in Encyclopaedia 



Britannica. ' 9th Ed. 1885. Part lxxiii., p. 429, etc. 



9. Lankester, E. Ray. Rhabdopleura. Quart. Journ. Micro^ 



Sci. (2). Vol. xxiv. 1884. 



10. McIntosh, W. Report on Cephalodiscus dodecalophus, etc. 



Challenger Reports. Vol. xx. 1887. With an Appendix 

 by S. F. Harmer. 



11. Milne-Edwards, H. Recherches anatomiques, physiologiques 



et zoologiques sur les Polypiers de France. 1841-1844. 



12. Roule, L. Considerations sur l'embranchement des Trocho- 



zoaires. Ann. Sci. Nat. (7). Tom. xi. 1891. 



13. Spengel, J. W. Monographic der Enteropneusten. Fauna 



und Flora des Golfes von Neapel. Bd. xvii. 



APPENDIX TO LITERATURE. 



I. Masterman, A. T. On the Diplochorda. Quart. Journ. Micro. 

 Sci. Vol. xl. 1897. 

 II. Delage, Y., and Herouard, E. Traite de Zoologie Concrete. 

 Tom. v. 1897. 

 III. Sedgwick, A. Text-book of Zoology. Vol. i. 1898. pp. 542- 

 585. Including a criticism of Masterman's Diplochorda. 

 (No. I.). 



