HYPOPHYSIS OF PETROMYZON AND AMIA 291 



11. Although probabl}^ primitively hollow, the rudiment 

 of the hypophysis is often solid. Such diversity is brought 

 about by embryonic developmental conditions, perhaps the 

 distance separating the rudiment from the infundibulum. 



List of Literature cited in this Paper. 



Atwell, W. J. (1919). — ^" The Development of the Hypophysis in the 



Anura ", ' Anat. Record ', vol. 15, 1919. 

 Baumgartner, E. A, (1916).—" The Development of the Hypophysis in 



Reptiles ", ' Journ. Morph.', vol. 28, 1916. 

 BiedU A. (1913). — ' Innere Hekretion ". Berlin. 

 ^ Dean, B. (1896). — "On the Larval Development of Amia calva ", ' Zool. 



Jahrb.', 9. 1896. 

 ^Dohrn, A. (1883). — "Die Entstehung der Hypophyse bei Petromyzon 



planeri ", ' Mitt. Zool. Stat. Neapel ', vol. 4, 1883. 

 • Goodrich, E. S. (1917). — " Proboscis Pores in Vertebrates ", ' Quart. 



Journ. Micr. Sci.', vol. 62, 1917. 

 Gotte, A. (1875). — ' Die Entwicklungsgeschichte der Unke ', Leipzig, 



1875. 

 — ■ — • (1883). — •" Ueber die Entstehung und Honiologien des Hirnanhangs ", 



' Zool. Anz.', 1883. 

 Haller, B. (1896). — •" Untersuchungen iiber die Hypophyse ", ' Morph. 



Jahrb.', vol. 25, 1896. 

 Herring, P. T. (1913).—" The Pituitary in Vertebrates ", ' Quart. Jour. 



Exp. Physiol.', 1913. 

 Kupffer, K. von (1893). — ' Studien zur vergleichenden Entwicklungs- 

 geschichte des Kopfes der Kranioten '. Lehman n, Miinchen and Leipzig, 



1893. 

 '^Prather, J. M. (1900).— " The Early Stages in the Development of the 



Hypophysis of Amia calva ", ' Biol. Bull.', vol. 1, 1900. 

 ' Reighard, J., and Mast, L. A. (1908).— "The Hypophysis of Amia 



calva ", ' Journ. Morph.', vol. 19, 1908. 



• Scott, W. B. (1888).—" Embryology of Petromyzon", ibid., vol. 1, 1888. 

 ^ (1883).— " Development of the Pituitary Body in Petromyzon", 



' Science ', vol. 2. 

 v' Smith, P. E. (1914). — " Development of the Hypophysis in Amia calva '", 

 ' Anat. Rec.', 8. 



V Stendell, W. (1913). — " Zur vergleichenden Anatomic und Histologie der 



Hypophysis cerebri ", ' Arch, f. mikr. Anat.', vol, 82, 1913. 



^ (1914 a). — " Die Hypophysis cerebri ", ' Lehrbuch der vergleichenden 



mikroskopischen Anatomic der Wirbeltiere ', Oppel., part 8, Jena, 1914. 



