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 w-triad; c, unusual grouping; d, similar 
view of M. terminalis, No. 1, for comparison, with one small supernumerary and 
w-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 7/2-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, h) and half 12 (fig. 5c, d), the 
former containing but one small chromosome and the latter two. 
