138 



FERNANDUS PAYNE. 



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C 







D 









 P 



Fi<;. 7. Gelastocoris (Galgulus) ocitlatus Fabr. A and B, female groups, 

 metaphase plates, showing 38 chromosomes ; C and D, male groups, showing 

 35 chromosomes ; E and F, polar views of the first maturation division, meta- 

 phase the differential chromosomes are indistinguishable ; G, a stage shortly 

 after synapsis, showing the presence of the nucleolus ; H, typical appearance 

 of the nucleus and nucleolus throughout the growth period ; I, a very early 

 prophase of the first division the contents of the nucleolus have been thrown 

 out into the nucleus ; /, prophase of the first division, when the chromosomes 

 are just beginning to form the plasmosome is still present, although apparentlj 

 smaller ; K, prophase of the first division the chromosomes are condensing 

 and the plasmosome has disappeared ; L, late prophase of the first division 

 -the chromosomes are formed, but have not taken up their position in 

 the equatorial plate. A, B, C and D are magnified 3,105 diameters; E 

 and F 2,009 diameters and G, H, I, J, K and L 1,297 diameters. 



