PLATE 3 
EXPLANATION OF FIGURES 
45 Early first spermatocyte anaphase from same animal as figures 48, 50 
and 57. 
46 Late metaphase from yet another animal. 
47 Metaphase from Dissosteira carolina. 
48 Metaphase from same animal as figure 45. 
49 Late metaphase or early anaphase from same individual as figure 34. 
50 Late anaphase. 
51 Metaphase from another animal. 
52 Metaphase from Arphia simplex. 
53 Metaphase from Dissosteira carolina; note secondary constriction of larger 
dyad. , 
54 and 55 Late anaphases from Arphia simplex. 
56 Metaphase from Arphia simplex. 
57 Late metaphases from same animal as figure 48. Note tendency to con- 
striction of larger dyad. ‘ 
58 First spermatocyte telophase, eleven chromosome group containing the 
larger dyad, c, and lacking accessory. (All telophases aré not only from the same 
individual but also from the same slide. ) 
59 Late anaphase Dissosteira carolina showing weakness of one dyad of one 
of larger chromosomes. 
60 Anaphase of Dissosteira carolina from same animal as figure 47. 
61 Telophase of twelve chromosome group. Accessory and smaller dyad 
present; e, fragment of e’ from another section. 
62 Similar to figure 58. 
63 Similar to figure 61 except that larger dyad, c, is present instead of smaller 
one. Accessory drawn from another section. 
64 Similar to figures 58 and 62 except that it contains smaller instead of larger 
dyad; e, ordinary dyad from another section. 
65 and 66 Second spermatocyte metaphases containing accessory; and figure 
65 smaller dyad, figure 66 the larger one. 
67 and 68 The same as above, eleven chromosome groups, one containing the 
larger dyad, c, the other the smaller. 
510 
