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Paulmier. F. C. 



'99 The Spermatogenesis of Anasa tristis. Jour. Morph. Supplement to 



Vol. XV. 

 Payne. F. 



'09 Some New Types of Chromosome Distribution and their Relation to Sex. 



Biol. Bull., XVI., 3 and 4. 

 Petrunkewitsch, A. 



'01 Die Richtungskorper und ihr Schicksal im befruchteten und unbefruchteten 



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 Platner. G. 



'88 Die erste Entwicklung befruchteter und parthenogenetischer Eier von 



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'08 Die Richtingskorperbildung im Ei von Formica sanguinea. Zool. Jahrb., 



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 Silvestri, F. 



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'05a A Study of the Germ-cells of Aphis rosae and Aphis CEnotherse. Jour. 



Exp. Zool., II., 3. 

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'06u Studies on the Germ-cells of Aphids. Ibid., No. 51. 

 'Q6>> Studies in Spermatogenesis, II. Ibid., No. 36, part II. 

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 Stschelkanovzew, J. P. 



'04 Ueber die Eireifung bei viviparen Aphiden. Biol. Centralbl., XXIV. 

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Morph., III. 

 Wilson, E. B. 



'05d Studies on Chromosomes, I. Jour. Exp. Zool., II., 3. 



'05b Studies on Chromosomes, II. Ibid., II., 4. 



'06 Studies on Chromosomes, III. Ibid., III., i. 



'07 The case of Anasa tristis. Science, N. S., XXV., February. 



'09a Recent Researches on the Determination and Heredity of Sex. Science, 



N. S., XXIX., January. 



'09/< Studies on Chromosomes, IV. Jour. Exp. Zool., VI., i. 

 '09c Studies on Chromosomes, V. Ibid., VI., 2. 



'09d The Female Chromosome Groups in Syromastes and Pyrrhocoris. Biol. 

 Bull., XVI., 4. 



