2 
316 Chromosomes in the Spermatogenesis of Anasa Tristis 
Puotos. 43 anp 44. Late telophases of second division—showing the poles 
widely separated and the eccentric chromosome with transverse furrow, lying 
midway between the poles. The telophase in Photo. 44 demonstrates that 
the lagging chromosome may divide at a very late stage of development. In 
this preparation the daughter cells, though still attached, plainly show the 
constriction of the cytoplasm which precedes cell division. 
Puoros. 45 anp 46. In these preparations the final division of the lagging 
(eccentric) chromosome is demonstrated, p. 299. 
Puoto. 47. Early spermatogonial prophase showing 20 large chromosomes 
and the two microchromosomes—one of these attached to a large chromosome. 
See text figure 4. 
Puotos. 48 anp 49. A little later stage, each preparation showing 22 
chromosomes. 
Puoro. 50. A still later stage where the chromosomes show the condensed 
form which precedes their division. At upper left hand center of group two 
chromosomes are in contact, attached almost at right angles. There are 
22 chromosomes in this preparation. 
Puorto. 51. Two spermatids each showing a well formed, deeply staining 
nucleolus. 
