OF THE MULLERIAN DUCT OF AMPHIBIANS. 525 



LIST OF WORKS QUOTED IN THE PAPEK. 



Semper, C. "Das Urogenitalsysteia der Plagiostomen und seine Bedeutung fiir das der iibrigen Wirbeb 



thiere," Arb. aus dem zool.-zoot. Institut in Wiirzburg, Bd. ii., 1875. 

 Marshall, A. Milnes, and Bles, E. J. " The Development of the Kidneys and Fat-Bodies in the Frog," 



Studies from the Biol. Laboratories of the Oivens College, vol. ii. 

 Wittich, . " Beitrage zur morphologischen und histologischen Entwickelung der Harn-und 



Geschlechtswerkzeuge der nackten Amphibien," Zeitsch. f. iviss. Zool., Bd. iv., 1853. 

 Spengel, J. W. " Die Segmentalorgane der Amphibien," Verhandlungen der physikalisch-medicinischen 



Gesellschaft zu Wiirzburg, Bd. x. 

 Spengel, J. W. "Das Urogenitalsystem der Amphibien," Arb. aus d. zool-zoot Institut in Wiirzburg, Bd. 



iii., 1876. 

 Schneider, A. " Ueber die Miiller'schen Gange der Urodelen und Anuren," Centralbl. fiir die Medic. Wiss., 



1876. 

 Furbringer, Max. "Zur Entw. der Amphibienniere," Heidelberg, 1877. 

 Furbringer, Max. " Zur vergleichenden Anatomie und Entwickelungsgescbichte der Excretionsorgane der 



Vertebraten," Morph. Jahrb., Bd. iv., 1878. 

 Kollmann, J. " Ueber Verbindungen zwischen Coelom und Nephridium," Basel, 1882. 

 Hoffmann, C. K. " Zur Entwickelungsgescbichte der Urogenitalorgane bei den Anamnia," Zeitsch. f. wiss. 



Zool., Bd. xliv. 

 Semon, Richard. " Studien liber den Bauplan des Urogenitalsystems der Wirbelthiere : dargelegt an der 



Entwickelung dieses Organsystems bei Ichthyophis glutinosus," Jena, 1891. 

 MacBride, E. "W. " The Development of the Oviduct in the Frog," Proc. Carrib. Phil. Soc, vol. vii. 

 Jungersen, Hector, F. E. " Om Udviklingen af den Muller'sche Gang (OZggelederen) hos Padderne," 



Copenhagen, 1892. 

 Kip, M. J. van Erp Taalman. " Over de Ontwikkeling van de Muller'sche Gang bij Zoogdieren," Tijdschr. 



d. Ned. Dierk. Vereen (2), iv. 

 Burger, H. " Over de Ontwikkeling van de Muller'sche Gang bij de Eend en de Bergeend," Tijdsch. d. 



Ned. Dierk. Vereen (2), iv. 



EXPLANATION OF PLATES. 



Fig. 1. Transverse section through Salamandra atra, 11 "5 mm. in length, showing the lateral union of 



alimentary canal and lung with the body-wall, in the region anterior to the pronephros. 

 Fig. 2. Section showing the segmental duct of the same salamander passing towards the mid-dorsal line, 



just posterior to the pronephros. 

 Figs. 3 and 4. Sections of the segmental duct of the same salamander, showing appearances met with in the 



region of the spiral twisting of the duct. 

 Fig. 5. Transverse section of Salamandra atra, 13 mm. in length, in the region of the anterior nephrostome. 

 Fig. 6. Transverse section of the same between the nephrostomes. 

 Fig. 7. Section showing ciliated depression in the thickened epithelium, posterior to the second nephrostome 



of the same specimen. 

 Figs. 8-11. Series from same specimen, showing spiral twist in the segmental duct, posterior to the pronephros. 

 Fig. 12. Section of Salamandra maculosa, 29 mm. in length, showing the thickened epithelium in the region 



of the pronephros, divided by the backward growth of the lateral attachment of the alimentary 



canal. 

 Fig. 13. Section of the same salamander, showing the undivided plate of thickened epithelium. 

 Figs. 14 and 15. Sections of Axolotl of 25 mm. in length, showing the thickened epithelium between the 



nephrostomes. 

 Fig. 16. Section of segmental duct and foundation of Mullerian duct in Axolotl, 27 mm. long. 



VOL. XXXVIII. — PART III. (NO. 12). 4 A 



