384 



6) Smith, Gr. Elliot, The Descriptive and Illustrated Catalogue of the 

 Eoyal College of Surgeons, 2. Edition, Vol.' 2, 1902. 



7) — , The Primary Subdivision of the Mammalian Cerebellum. Journ. 

 of Anat. and Physiol., Vol. 36, 1902, p. 381 — 385. 



8) — , On the Morphology of the Brain in the Mammalia. Transact, 

 of the Linnean Society of London, Ser. 2, Zool., Vol. 8, Part 10, 

 1903 — The Cerebellum, p. 425—431. 



9) Bradley, 0. Charnock, On the Development and Homology of the 

 Mammalian Cerebellar Eissures. Journ. of Anat. and Physiol., 

 Vol. 37, 1903, p. 112—130. 



10) Smith, G. Elliot, Notes on the Morphology of the Cerebellum, 

 Journ. of Anat. and Physiol., Vol. 37, 1903. 



Nachdruck verboten. 



Zuekerkandl on the Phylogeny of the Corpus callosum. 



By G-. Elliot Smith in Cairo. 

 With one Figure. 



In a series of three memoirs 1 ), Zuckerkandl has recently chal- 

 lenged the statements of Symington and the writer that no true 

 corpus callosum (i. e. no neopallial commissure invading or supplanting 

 the dorsal alveus hippocampi) exists in the brain of the Marsupialia. 

 Zuckerkandl, in fact, maintains (op. cit. Note lc, p. 59) that the 

 dorsal commissure of the cerebrum in Perameles (and also in Ma- 

 cropus giganteus and Hypsiprymnus Gemardi) is derived 

 not only from the hippocampus but also from the region beyond the 

 hippocampus which he calls "pallium". [In an earlier memoir I have 

 shown that the term "pallium 1 ' cannot be strictly employed in such a 

 sense and have proposed the name "neopallium" 2 ).] 



Although a reference to the writings of Symington and myself 

 or even to the memoirs (vide Note la and c) of Zuckerkandl him- 

 self clearly shows that the dorsal commissure of the Marsupialia is 

 nothing else than a fornix-commissure (i. e. a commissure wholly de- 

 rived from those cortical areas, which in the Eutheria emit the fornix) 



1) a) Beitrag zur Anatomie des Riechzentrums. Sitzungsber. d. 

 Kais. Akad. Wiss. Wien, Bd. 109, 1900. — b) Zur Phylogenese des 

 Balkens. Verhandl. d. Morphol.-physiol. Gesellsch. zu Wien. Centralbl. 

 f. Physiol., 1903. — c) Die Bindenbündel des Alveus bei Beuteltieren. 

 Anat. Anzeiger, Bd. 23, No. 2/3, 8. April 1903, p. 49—60. 



2) The Natural Subdivision of the Cerebral Hemisphere. Journ. 

 of Anat. and Physiol., Vol. 35, July 1901, p. 431—454. 



