AN EXTRA DYAD AND EXTRA TETRAD IN CAMNULA 389 
TABLE 1 
Chromosome counts in individual 980 
Collected in 1909. Locality: San Juan Island, Puget Sound 
FOLLICLE SPERMATOGONIA FIRST SPERMATOCYTES SECOND SPERMATOCYTES 
Cyst 1 
A 17 metaphases: 12 tet- 
rads + 1 accessory 
(figs. 27, 28) 
Cyst 2 
B 6 prophases: 12 tetrads 
+ 1 accessory (fig. 
29) 
Cyst 3 
© 17 metaphases: 11 tet- 
rads + 1 accessory + 
1 dyad (figs. 24, 32) 
Cyst 4 
15 metaphases: 11 tet- 
rads + 1 accessory + 
1 dyad (fig. 26) 
Cyst & 
D 19 metaphases: 12 tet- 
rads + 1 accessory 
Cyst 6 
13 metaphases: 12 tet- | 
rads + 1 accessory 
(fig. 30) 
Cyst 18 Cyst 7 
E 3 metaphases: 26 6 metaphases: 13 dyads 
dyads (fig. 41) (fig. 38) 
2 metaphases: 14 dyads 
(fig. 35) 
2 metaphases: 12 dyads 
1 anaphase: 13 monads + 
13 monads 
Cyst 8 
16 metaphases: 13 dyads 
7 metaphases; 12 dyads 
(fig. 37) 
5 metaphases: 14 dyads 
2 metaphases: 11 dyads 
