SEX-CHARACTERS IN LEBISTES RETICULATUS. 381 



chromosome never is devoid of color factors. If that be so, our 

 hermaphrodite lacks the Y-chromosome and from a genetic point 

 of view it is a female. 



LITERATURE CITED. 



1. Aida, T. 



'21 On the Inheritance of Color in a Fresh-water Fish, Aplocheihis lalipes. 

 Genetics, 6. 



2. Courrer, R. 



'22 Etudes preliminaire du determinisme des caracteres sexuels secondaires chex 

 les poissons. Arch, d' anat. d' histol. et d' embriol., T. 2. 



3. Essenberg, J. M, 



'23 Sex-differentiation in the Viviparous Teleost, Xiphophorus helleri. BIOL. 

 BULL., Vol. 45, No. i. 



4. Kopec, S. 



'18 Contribution to the Study of the Nuptial Color of Fishes. (Polish with 

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5. van Oordt, G. 



'23 Secondary Sex-characters and Testis of the Ten-spined Stickleback. Proc. 

 kon. Akad. v. Wetensch, Amsterdam, v. 26. 



6. van Oordt, G. 



'24 The Relation of the Testis to the Secondary Sex-characters of the Ten-spined 

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7. van Oordt, G. 



'24 Die Veranderung des Hodens wahrned des Auftretens des Sekundaren 

 Geschleshtsmerkmale bei Fischen. Gasterosteus pungitius. Arch.f. Mikr. 

 Anat. u. Entw.-Mech., 40, 102. 



8. Winge, O. 



'22 One-sided and Sex-linked Inheritance in Lebistes reliculatiis. Journ. of 

 Genetics, Vol. 12, No. 2. 



9. Winge, O. 



'23 Crossing over between X- and Y-chromosomes in Lebistes. Journ. of 

 Genetics, Vol. 13, No. 2. 



10. Zawadowsky, M. 



'22 Das Geschlecht und die Entwicklung der Geschlechtsmerkmale. Moscow, 

 Staatsverlag. (Russian with German summary.) 



11. Zawadowsky, M. 



'23 Die Entwicklungsmechanik des Geschlechts, Moscow, Russia, Staatsverlag 



25 



