50 



EISEN. 



[Vol. XVII. 



As far as I know, similar fiber cones have not been observed 

 in any other animal cells, though I have some reason to think 



Two daughter-cells of an auxocyte connected by a spindle bridge. There are eight accessory 

 archosomes at the apex of as many fiber cones. Two archosomes are connected by a cen- 

 tral spindle. In the latter is seen a mid-body consisting of three condensation granules. 

 The chromosomes are being regenerated, and the chromoplasts appear at the angle of the 

 chromosomes instead of at the apex, as in the last cell stage. In one nucleus are seen 

 five, in the other six chromoplasts with endochromatic granules. Between the true 

 nuclear membrane and the false membrane is an open space caused by the false mem- 

 brane being pulled away by the fiber cones. 



that the auxocytes of Batrachoseps are not the only cells which 

 possess them. Dr. W. J. V. Osterhout has kindly shown me 

 a preparation of the testes of Triton cristatus, in which I could 



