STUDIES ON CHROMOSOMES 



61 



Fig. 3 Metaphases and anaphases of the first division, No. 64, in side view, a, 

 b, typical side views, with linear central m-triad; c, unusual grouping; d, similar 

 view of M. terminalis, No. 1, for comparison, with one small supernumerary and 

 m-bivalent (23 chromosomes) ; e. g, similar views of M. femoratus, No. 29 (22 chro- 

 mosomes) for comparison;/, the same, M. femoratus, No. 46 (22 chromosomes) ; 

 h-k, No. 64, initial anaphase, separation of the m-triad. 



in both testes, and all the stages are shown by hundreds. In 

 polar views of the metaphases about half the cells are seen to 

 contain 11 chromosomes (fig. 5a, 6) and half 12 (fig. 5c, d), the 

 former containing but one small chromosome and the latter two. 



