332 LITEBATUBE. 



LITERATURE. 



1. BBOOKS, W. K. The development of the digestive tract in 



Molluscs. Proc. Boston Soc. Nat. Hist. Vol. xx. 1880. 



2. BBOOKS, W. K. The acquisition and loss of food-yolk in 



Molluscan eggs. Stud. Biol. Lab. Johns Hopk. Univ. No. 4. 

 1880. (This and the preceding work were inaccessible to us.) 



3. GIABD, A. On the relationship of the Annelida and Mollusca, 



Ann. Mag. Nat. Hist. (6). Vol. v. 1890. 



4. GBAFF, L. VON. Enantia spinifera, der Reprasentant einer 



neuec Polycladen-Familie. Mittheil. Naturw. Vereins Steier- 

 mark. Graz, 1889. 



5. HATSCHEK, B. 1. Studien iiber die Entwicklungsgeschichte der 



Anneliden. Arb. Zool. Inst. Wien. Bd. i. and ii. 1878, 

 Lehrbuch der Zoologie. Jena, 1888-91. 



6. JHEBING, H. VON. Das Nervensystem und die Phylogenie der 



Mollusken. Leipzig, 1878. 



7. JHEBING H. VON. Sur les relations naturelles des Cochlides et 



des Ichnopodes. Bull. Sci. France et Belgique (A. Giard), 

 Tom. xxiii. Paris, 1891. 



8. LANKESTEB, E. RAY. Contributions to the developmental 



history of the Mollusca. Phil. Trans. London, 1875. 



9. LANKESTEB, E. RAY. Contributions to the developmental 



history of the Mollusca. Phil. Trans. London, 1875. 



10. LANKESTEB, E. RAY. Notes on the Embryology and Classifica- 



tion of the Animal Kingdom, etc. Quart. Journ. Micro. Sci* 

 Vol. xvii. 1877. 



11. LANKESTEB, E. RAY. Mollusca in Encyclopaedia Britannica, 



Ninth Edition. Vol. xvi. 1883. 



12. LANG, A. Die Polycladen des Golf es von Neapel. Leipzig, 



1884. 



13. LANG, A. Untersuchimgen zur vgl. Anatomie und Histologie 



des Nervensystems der Plat helmin then. iv. Tricladen. 

 Mittheil. Zool. Stat. Neapel. Bd. iii. 1882. 



14. PELSENEEB, P. Sur 1'epipodium des Mollusques. Bull. Sci. 



France et Belg. (A. Giard). Tom. xix., xxii., xxiii. 1888-1891. 



15. PELSENEEB, P. La classification generale des Mollusques. 



Bull. Sci. France et Belgique (A. Giard). Tom. xxiv. Paris, 

 1892. 



