328 GENERAL EMBRYOLOGY 



chromosomes, Idiochromosomes and Heterotropic Chromosomes 

 in the Hemiptera. Id. 1905. III. The sexual Differences of 

 the Chromosome Groups in Hemiptera, with some Considerations 

 on the Determination and Heredity of Sex. Id. 3. 1906. IV. 

 The " Accessory" Chromosome in Syromastes and Pyrrhocoris^ 

 with a Comparative Review of the Types of Sexual Differences 

 of the Chromosome Groups. Id. 6. 1909. V. The Chromo- 

 somes of Metapodius. A Contribution to the Hypothesis of the 

 Genetic Continuity of Chromosomes. Id. 6. 1909. VI. A 

 new Type of Chromosome-Combination in Metapodius. Id. 9. 

 1910. VII. A Review of the Chromosomes of Nezara. with some 

 more general Considerations. Jour. Morph. 22. 1911. The 

 Chromosomes in Relation to the Determination of Sex. Science 

 Progress. 4. 1910. The Sex-Chromosomes. Arch mikr. Anat. 

 77. 1911. 



YATSU, N., Experiments on Germinal Localization in the Egg of 

 Cerebratulus. Jour. Coll. Sci. Imp. Univ. Tokyo. 27. 1910. 

 Observations and Experiments on the Ctenophore Egg. II. 

 Notes on Early Cleavage Stages and Experiments on Cleavage. 

 Ann. Zool. Japonensis. 7. 1911. 



ZELENY, C., (Ref. Ch. VI.) 



ZOJA, R., Sullo sviluppo dei blastomeri isolati dalle uova di alcune 

 meduse (e di altri organismi). Arch. Entw.-Mech. 1 and 2. 

 1895. 



ZUR STRASSEN, 0., Ueber die Riesenbildung bei Ascaris-Eiern. Arch. 

 Entw.-Mech. 7. 1898. 





