PLATE 22 



EXPLANATION OF FIGURES 



(C. curtipennis) 



171 Shows conditions similar to those of figures 169 and 170. 



172 Showing the same association, also the relative condensation of the no. 



4 and 10.c chromosomes and that of the other autosomes (no. 6) in the same cell. 



173a, 173b A prophase similar to figure 150, showing a complete set of chro- 

 mosomes. 7-11 is displaced and drawn as 173a to make room for the other chro- 

 mosomes. Note the position and the stage of condensation of nos. 4 and 10.r. 



174 Stage /. Prophase similar to figure 155. The junction of 7 with 11, 



5 with 9, and 8 with 10 is shown by constriction at x, x in each case. 



175 Stage i. The 7-11 multiple-chromosome. 



176 Stage i. Junction of 8 with 10 shown at x, x by constrictions, x, x 

 correspond to the apices of the 8-10 V's of figures 161, 162. 



177 A 7-11 pair enclosing a 5-9 pair. Stage i. 



322 



