No. I.] POLYCHOERUS CAUDATUS. 



LITERATURE. 



Mark, E. L. Polychoerus caudatus nov. gen. nov. spec. Fest- 

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Whitman, C. O. Spermatopheres as a Means of Hypodermic Impreg- 

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Pereyaslawzewa, Dr. Sophie. Monographie des Turbellaries de 

 la Mer Noire. 



Selenka, E. Ueber eine eigenthiimliche Art der Kernmetamorphose. 

 Biol. Centralbl. Bd. i. 



Lang, Arnold. Die Polycladen des Golfes Neapel. Fauna unci 

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Wheeler, W. M. Planocera Inquilina, a Polyclad inhabiting the 

 Branchial Chamber of Sycotypus canaliculatus. fourn. of Morph. 

 Vol. ix, No. 2. 



7. Wheeler, W. M. The Behavior of the Centrosomes in the Fertilized 



Egg of Myzostomaglabrum (Leuckart). fourn. of Morph. Vol. x. 

 No. I. 



8. Graff, Ludwig von. Monographie der Turbellarien. I. Rhabdo- 



coelida. 



9. Graff, Ludwig von. Die Organization der Turbellaria Acoela. 



10. Gardiner, E. G. Early Development of Polychoerus caudatus 



(Mark), fourn. of Morph. Vol. xi, No. i. 



11. Foot, Miss Katharine. Yolk-Nucleus and Polar Rings, fourn. of 



Morph. Vol. xii. No. i. 



12. Foot, Miss Katharine. The Origin of the Cleavage Centrosomes. 



fourn. of Morph. Vol. xii. No. 3. 



13. Wilson, E. B. The Cell in Development and in Inheritance. 



14. Wilson, E. B., and Mathews, Albert P. Maturation, Fertiliza- 



tion, and Polarity in the Echinoderm Egg. New light on the 

 " Quadrille of the centers." fourn. of Morph. Vol. x. No. i. 



15. Calkins, G. N. Observations on the Yolk-Nucleus in the Eggs of 



Lumbricus. Transactions of New York Academy of Science, ]\xat. 

 18, 1895. 



16. NussBAUM, J. L'eber die Theilung der Pigmentkomchen bei Karyo- 



kinese. Anat. Anz. Jahrg. viii, Nr. 20. 1893. 



