457 
Wilson. — Spermatogenesis in the Bryophyta. 
Fig. 65. Slightly later stage, showing centrosphere and radiations. 
Fig. 66. Cell in early prophase of the final division. 
Fig. 67. Prophase of final division, showing nucleus pointed at each end. 
Fig. 68. Telophase of final division. 
Fig. 69. Spermatid seen from side, showing blepharoplast in position where first distinguished. 
Fig. 70. Spermatid seen from side, showing blepharoplast half-way to angle. 
Fig. 71. Pair of spermatids, seen from side, showing swollen mother-cell walls and dividing 
wall ; in the lower cell blepharoplast is at the angle, while in the upper one it is a short distance 
from the angle. 
Fig. 72. Pair of spermatids seen from side, showing blepharoplasts in widely separated angles. 
Fig. 73. Pair of spermatids seen from side, showing blepharoplasts in adjacent angles. 
Fig. 74. Spermatid from below, showing blepharoplast. 
Fig- 75 - Spermatid from side, showing blepharoplast and thread. 
Fig. 76. Spermatid seen obliquely from side, showing blepharoplast and thread. 
Fig. 77. Spermatid from below, showing limosphere, accessory body, blepharoplast, and thread. 
Fig. 78. Pair of spermatids seen slightly obliquely from side ; in each the limosphere, accessory 
body, and thread can be seen. 
Fig. 79. Spermatid from below with limosphere, accessory body, blepharoplast, and thread. 
Fig. 80. Spermatid from below, showing elongating nucleus. 
Fig. 81. Spermatid from below, showing the nucleus elongated into a spiral. 
