8TUDY OF CHROMOSOMES IN NOTONECTA 147 



Stevens, N. AI. 1907 A study of the germ cells of certain Diptera, with ref- 

 erence to the heterochromosomes and the phenomena of synapsis. 

 Jour. Exp. Zool., vol. 5, p. 359. 



1908 The chromosomes in Diabrotica vittata, etc. Jour. Exp. Zool., 

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1911 Further studies on the heterochromosomes in mosquitoes. 

 Biol. Bull., vol. 20, p. 109. 



1912 Supernumerary chromosomes and synapsis in Ceuthophilus. 

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Wallace, L. B. 1909 The spermatogenesis of Agalena naevia. Biol. Bull., 

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Wilson, E. B. 1906 Studies on chromosomes III. The sexual differences of 

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1907 Note on the chromosome-groups of Metapodius and Banasa. 

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1909 Studies V. The chromosomes of Metapodius, a contribution 

 to the hypothesis of the genetic continuity of the chromosomes. Jour. 

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1911 Studies VII. A review of the chromosomes of Nezara, with 

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1912 Studies VIII. Observations on the maturation phenomena m 

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