140 



FERNANDUS PAYNE. 



division is impossible to say. All the chromosomes divide equally 

 so that each secondary spermatocyte receives 20 chromosomes. 

 No reconstruction period follows. (Fig. 8 and 9 are the same 

 as in the preliminary paper, but Fig. 7 is new with the exception 

 of A.) 



My former description of the second division seems adequate, 

 and as I have nothing new to add, I will quote it as there described. 



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FIG. 8. Galastocoris (Galgulus} oculatus Fabr. A and B, metaphase 

 figures of the second spermatocyte division, polar view, showing the ring of 15 

 chromosomes and the pentad group in the center in B, the chromosome 

 beneath the four group could not be shown without displacing it ; C and D, late 

 anaphases of the second division, polar view, showing the unequal distribution 

 of the chromosomes ; E, side view of the second division, metaphase, showing 

 the typical arrangement and position of the pentad group ; F, side view of 

 the early anaphase, second division, showing the manner in which the chromo- 

 somes of the pentad group separate the spindle in both E and F is diagram- 

 matic ; G, H and /, early anaphases of the second division. All drawings are 

 made on the same scale and magnified 3,105 diameters. 



The second division which follows immediately after the first, 

 shows a remarkable regrouping of certain of the chromosomes. 



