Plate VII 



Clastoptera ohtusa {Continued) 

 Fig. 226 Second spermatocyte, anaphase. 

 Fig. 227 Early spermatid, with chromatin nucleolus. 

 Fig. 228 Spermatid, formation of axial filament. 

 Figs. 229, 230 Later spermatids. 

 Fig. 231 Mature spermatozoon. 



Aphrophora quadrangular is luith II chromosomes (Family Cercopidie) 

 Fig. 232 Spermatogonia! equatorial plate, 21 chromosomes. 

 Fig. 233 First spermatocyte, contraction stage. 

 Fig. 234 First spermatocyte, spireme stage. 

 Fig. 235 First spermatocyte, equatorial plate, 11 chromosomes. 

 Fig. 236 First spermatocyte, metaphase. 

 Fig. 237 First spermatocyte, anaphase. 



Figs. 238, 239 Second spermatocytes, equatorial plates, containing 11 and 10 chromosomes, respect- 

 ively. 



Fig. 240 Second spermatocyte, metaphase. 

 Fig. 241 Second spermatocyte, anaphase. 

 Fig. 242 Spermatid, with chromatin nucleolus. 



Aphrophora quadrangular is with 12 chromosomes {Family Cercopida^ 



Fig. 243 First spermatocyte, contraction stage. 



Fig. 244 First spermatocyte, equatorial plate, 12 chromosomes. 



Fig. 245 First spermatocyte, metaphase. 



Fig. 246 First spermatocyte, anaphase. 



Fig. 247 Second spermatocyte, equatorial plate, 12 chromosomes. 



Fig. 248 Second spermatocyte, anaphase. 



Aphrophora 4-notata (Family Cercopidce) 

 Fig. 249 First spermatocyte, spireme stage. 

 Fig. 250 First spermatocyte, equatorial plate, 14 chromosomes. 

 Fig. 251 First spermatocyte, metaphase. 

 Fig. 252 First spermatocyte, anaphase. 



Figs. 253, 254 Second spermatocytes, equatorial plates, containing 14 and 13 chromosomes, respect- 

 ively. 



Fig. 255 Second spermatocyte, anaphase. 



