LITERATURE. 



1. ANDREWS. Some Activities of Polar Bodies. Johns Hopkins Univ. 



Circ., Vol. XVIL, No. 132, 1897. 



2. ANDREWS. Activities of the Polar Bodies of Cerebratulus. Arch. 



f. Entwicklungsmechanik. Bd. IV., 1898. 



3. BROOKS. The Origin of the Oldest Fossils and the Discovery of 



the Bottom of the Ocean. Smithsonian Report for 1894 (also 

 Salpa. 



4. BROOKS. The Development of the American Oyster (Ostrea vir- 



giniana). Stud. Biol. Lab. Johns Hopkins Univ., Vol. I, 1880. 



5. DREW. Yoldia limatula. Memoirs from the Biol. Lab. of the Johns 



Hopkins Univ. Vol. 4, No. 3, 1889. 



6. DREW. Locomotion in Solenomya and its Relatives. Anat. Anz. 



Bd. XVIL, No. 15, 1900. 



7. DREW. The Life-History of Nucula delphinodonta. Quart. Jour. 



of Micro. Sci. Vol. 44, Part 3, New Series, 1901. 



8. GRAVE. Investigations for the Promotion of the Oyster Industry 



of North Carolina. U. S. Fish Com. Report for 1903. 



9. HATSCHEK. Ueber Entwickelungsgeschichte von Teredo. Arb. 



Zool. Inst. Wien. Bd. 3, 1880. 



10. HEATH. The Development of Ischnochiton. Zool. Jahrb., Abth. f. 



Anat. u. Ontog. Bd. 12, 1899. 



11. HYDE. The Histology of the Eye of Pecten. Mark Anniversary 



Volume, Harvard, 1903. 



12. JACKSON. Phylogony of the Pelecypoda. Memoirs Boston Soc. 



Nat. Hist. Vol. IV., No. 8, 1890. 



13. JAMESON. On the Origin of Pearls. Proc. Zool. Soc. London, 1902. 



14. KELLOGG. A Contribution to our Knowledge of the Morphology of 



Lamellibranchiate Mollusks. Bui. U. S. Fish Com. Vol. X., 

 1890. 



15. KELLOGG. The Ciliary Mechanism in the Branchial Chamber of the 



Pelecypoda. Science (2), Vol. n. 



16. KOWALEVSKY. Embryogenie du Chiton Polii (Philippi) avec 



quelques Remarques sur le Developpement des Autres Chitons. 

 Ann. Mus. Hist. Nat. Marseille. T. i, No. 5, 1883. 



6 4 



