REPRODUCTION 161 



1919 On Trichonympha campanula sp. nov. 



Ibid. 



Kudo, R. R. 1925 Observations on Endamoeha blattae. Amer. 

 Jour. Hyg., Vol. 6. 



1926 Observations on Lophomonas blattarum, a flagel- 

 late inhabiting the colon of the cockroach, Blalta orientalis. 

 Arch. f. Protistenk., Vol. 53. 



1926 A cytological study of Lophomonas striata. Ibid., 



Vol. 55. 



1936 Studies on Nydotherus oralis Leidy, with special 



reference to its nuclear structure. Ibid., Vol. 87. 

 LiESCHE, W. 1938 Die Kern- und Fortpflanzungsverhaltnisse 



von Amoeba proteus. Ibid., Vol. 91. 

 Lund, E. J. 1917 Reversibility of morphogenetic processes in 



Bursuria. Jour. Exp. Zool., Vol. 24. 

 Noble, E. R. 1938 The life-cycle of Zygosoma globosum sp. 



nov., a gregarine parasite of Urechis caupo. Univ. Calif. 



Publ. Zool., Vol. 43. 

 NoLAND, L. E. 1927 Conjugation in the ciliate Metopus sig- 



moides. Jour. Morph. Physiol., Vol. 44. 

 Prandtl, H. 1906 Die Konjugation von Didinium nasutum. 



Arch. f. Protistenk., Vol. 7. 

 Reichenow, E. 1928 Ergebnisse mit der Nuclealfarbung bei 



Protozoen. Ibid., Vol. 61. 

 SoNNEBORN, T. M. 1936 Factors determining conjugation in 



Paramecium aurelia. I. Genetics, Vol. 21. 

 1937 Induction of endomixis in Paramecium aurelia. 



Biol. Bull., Vol. 72. 

 1937 Sex, sex inheritance and sex determination in 



Paramecium aurelia. Proc. Nat. Acad. Sci., Vol. 23. 

 and B. M. Cohn 1936 Factors determining conjugation 



in Paramecium aurelia. II. Genetics, Vol, 21. 

 and R. S. Lynch 1937 III. Ibid., Vol. 22. 



Summers, F. M. 1935 The division and reorganization of the 



macronuclei of Aspidisca lynceus, Diophrys appendiculata 



and Stylonychia pustulata. Arch. f. Protistenk., Vol. 85. 

 Turner, J. P. 1930 Division and conjugation in Euplotes patella 



with special reference to the nuclear phenomena. Univ. Calif. 



Publ. Zool., Vol. 33. 

 Wichterman, R. 1936 Division and conjugation in Nyctotherus 



cordiformis with special reference to the nuclear phenomena. 



Jour. Morph., Vol. 60. 

 Woodruff, L. L. 1932 Paramecium aurelia in pedigree culture 



for twenty-five years. Trans. Amer. Micr. Soc, Vol. 51. 

 and R. Erdmann 1914 A normal periodic reorganization 



process without cell fusion in Paramecium. Jour. Exp. Zool., 



Vol. 17. 



