EMBRYOLOGY OF THE MARSUPIALIA. 21 



List of Papers referred to. 



1. Hill, J. P. — "The Placentatiou of Perameles," 'Quart. Journ. Micr. 



Sci.,' vol. xl, p. 385. 



2. Semon, R. — " Die Embryonallii'illeii der Monolrenien und Maisupialer," 



' Zool. Forscli. in Australieii u. deni Malayisciien Arcliipel.,' Bd. ii. 



3. Selenka, E. — ' Studien iiber Eotwickelungsgeschichte der Tliiere : ' IV 



(1 and 2), Das Opossum (Didelphys virginiaaa), Wiesbaden, 

 1886. 



4. Owen, R. — "On the Generation of Marsupial Animals, etc.," 'Phil. 



Trans.,' 1834.. 



5. Owen, R. — "On the Existence of an Ailantois in a Foetal Kangaroo," 



'Proc. Zool. Soc.,' pt. V, 1837, p. 82. Cf. also ' Comp. Anat. of 

 Vertebr.,' vol. iii, p. 569 ; and Todd's ' Cyclop, of Anat. and Phys.,' 

 vol. iii, p. 324, 6g. 141. 



6. CosTE, M. — "Vesicule allantoide observee dans I'ceuf des Kangaroo," 



' Compt. Rend. Acad. Sci.,' Paris, torn, v, 1837. 



7. Chapman, H. C. — "On a Foetal Kangaroo and its Membranes," 'Proc. 



Acad. Nat. Sci. Philadelphia,' pt. iii, 1881, p. 468. 



8. Caldwell, W. 11.— "On the Arrangement of tiie Embryonic Mem- 



branes in Marsupial Animals," ' Quart. Journ. Micr. Sci.,' vol. xxiv, 

 1884. 



9. Hill, J. P. — " Preliminary Note on the Occurrence of a Placental Con- 



nection in [Perameles obesula and on the Foetal Membranes of 

 Certain Macropods," 'Proc. Linn. Soc. N.S.W.,' vol. x (2nd ser.), 

 pt. iv, 1895. 



10. OsBORN, H. F.—" Observations upon the Foetal Membranes of the 

 Opossum and other Marsu|)ials," 'Quart. Journ. Micr. Sci.,' vol. xxiii, 

 1883. " The Foetal Membranes of the Marsupials : the Yolk-sac 

 Placenta in Didelphys," 'Journ. of Morph.,' vol. i, 1888. 



