104 JOSE F. NONIDEZ 
LITERATURE CITED 
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Bortne, A. M. 1909 A small chromosome in Ascaris megalocephala. Arch. f. 
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Carotunrs, E. E. 1913 The Mendelian ratio in relation to certain orthopteran 
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1917 The segregation and recombination of homologous chromosomes 
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Epwarps, C. L. 1910 Idiochromosomes in Ascaris megalocephala and Ascaris 
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Goopricu, H. B. 1916 The germ cells of Ascaris incurva. Jour. Exp. Zool., 
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1905 Spermatogénése dans les batraciens. III. Evolution des auxo- 
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de maturation des spermatocytes chez Batracoseps attenuatus et 
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Kornuaussr, 8. 1914 A comparative study of the chromosomes in the sper- 
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McCuuna, C. E. 1905 The chromosome complex of orthopteran spermatocytes. 
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1914 A comparative study of the chromosomes in orthopteran sper- 
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1917 The multiple chromosomes of Hesperotettix and Mermiria. 
Ibid., vol. 29. 
Nonrpez, J. F. 1914 Los cromosomas en la espermatogénesis del Blaps lusi- 
tanica Herbst. Trab. Mus. Cienc. Natur. Madrid, Ser. Zool. num. 18. 
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ParnTER, T. 8S. 1914 Spermatogenesis in spiders. I. Zool. Jahrb., Bd. 38. 
Payne, F. 1908 On the sexual differences of the chromosome groups in Gal- 
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1909 Some new types of chromosome distribution and their relation 
to sex. Ibid., vol. 16. 
1910 The chromosomes of Acholla multispinosa. Ibid., vol. 18. 
