Munson. 
Fig. 122. 
Fig. 123. 
Fig. 124. 
Fig. 125. 
Fig. 126- 
Fig. 128. 
Fig. 129. 
Fig. 130. 
Fig. 131. 
Fig. 132. 
Fig.. 133. 
Fig. 134. 
Fig. 135. 
Fig. 136. 
Fig. 137. 
Fig. 138. 
Fig. 139. 
Fig. 140. 
Fig. 141. 
Fig. 142. 
Fig. 143. 
Fig. 144. 
Fig. 145. 
Fig. 146. 
Fig. 147. 
Fig. 148. 
Fig. 149. 
Fig. 150. 
Fig. 151. 
Fig. 152. 
- Spermatogenesis of Papilio. 
PLATE 17. 
Abnormal spermatid with two nuclei. 
Abnormal spermatid with three nuclei. 
Abnormal spermatid with two nuclei and nebenkern. 
Typical spermatid with centrosome and nebenkern. 
127. Typical spermatids of the small kind. 
Spermatid with two centrosomes and nebenkern. 
Slightly elongated spermatid. 
Elongated spermatid with two centrosomes and nebenkern. 
Giant spermatid with centrosome, nebenkern, and mitosome. 
Growing spermatozoon with centrosome, nebenkern, and axial fila¬ 
ment. 
Growing spermatozoon, with centrosome, mitosome, nebenkern, 
and axial filaments. 
Growing spermatozoon with centrosome, mitosome, nebenkern, 
and divided axial filament. 
Growing spermatozoon with centrosome, nebenkern, and axial fila¬ 
ment. 
Growing spermatozoon with the axial filament apparently passing 
through the nucleus. 
Growing spermatozoon with centrosome, small mitosome, neben¬ 
kern, and axial filament. 
Growing giant spermatozoon. 
Growing spermatozoon as it appears at a constant period of growth. 
Growing spermatozoon with centrosome, axial filament, axial 
vacuole, and migrating nebenkern. 
Growing spermatozoon with centrosdme and migrating nebenkern. 
Growing spermatozoon with centrosome and elongated nebenkern. 
Growing spermatozoon with centrosome, nebenkern, axial filament, 
and axial vacuoles. 
Growing spermatozoon with centrosome, nebenkern, axial fila¬ 
ment, and three axial vacuoles. 
Growing spermatozoon just before the elongation of the nucleus 
to form head of spermatozoon, and having several axial vacuoles. 
Spermatozoon with elongated acrosome centrosome, but the chro¬ 
matin still forming a spherical mass. 
Spermatozoon with elongated acrosome and distributed chromatin, 
into an elongated head. 
Spermatozoon with elongated head showing distinct chromosomes 
or chromatin granules and an elongated body (centrosome) in the 
acrosome. 
Spermatozoon from the vas deferens not yet entirely discharged 
from spermatocyst; acrosome still imbedded in the head nurse¬ 
cell. 
Spermatozoon from vas deferens, lower third. 
Mature spermatocysts from teased material. 
Spermatozoa just set free from a single mature spermatocyst (teased 
preparation). 
