THE CHROMOSOMES OF PSEUDOCOCCUS NIP.E. 267 



6. The case is not so much to be regarded as an illustration of 

 Weismann's ideal type of reduction, as an exceptional example 

 of reduction due to unusual sex chromatin distribution. 



BIBLIOGRAPHY. 

 Goldschmidt, Richard. 



'05 Eireifung, Befruchtung, und Embryonalentwicklung des Zodgonus 



minis. Zool. Jahrb., Bd. 21. 

 '08 Die Chromatinreifung der Geschlechtszellen des Zodgonus mints und 



der Primartypus der Reduktion. Arch. f. Zellf., Bd. 2. 

 Gregoire, Victor. 



'09 Le reduction dans Ie Zodgonus mints Lss. et le " Primartypus." La 



Cellule, Tome 25. 

 McClung, C. E. 



'05 The Chromosome Complex of Orthopteran Spermatocytes. BIOL. BULL., 



Vol. 9. 

 Morrill, Charles V. 



'10 The Chromosomes in the Oogenesis, Fertilization, and Cleavage of 



Coreid Hemiptera. BIOL. BULL., 19. 

 Schreiner, A., und K. E. 



'08 Neue Studien, V. Die Reifung der Geschlechtszellen von Zodgonus 



mints. Vidensk. Selks. Schr. I. Math.-Naturv. Kl. 

 Wassermann, F. 



'n Ueber die Eireifung bei Zodgonus mints Lss. Sitz.-Ber. d. Ges. f. 



Morph. und Phys., Mtinchen. 

 '12 Zur Eireifung von Zodgonus mirus, ein Beitrag zur Synapsisfrage. 



Ver. d. Anat. Ges. Bd. 26. 

 '13 Die Oogenese des Zodgonus mints Lss. Arch. mikr. Anat., Bd. 83, 



Abt. 2. 

 Wilson, E. B. 



'09 Studies on Chromosomes. IV. Jour. Exp. Zool., 6. 



All drawings made with a Spencer 15 eyepiece and Zeiss 1.5 objective with 

 the exception of Figs, i and 2, where a 10 eyepiece and 2 mm. objective were 

 used. 



