236 MONTGOMERY — A STUDY OF THE CHROMOSOMES OF THE GEEM CELLS OF METAZOA. 



8inc.ii, diadema, Fig.t. 2/2-2 IS. 



Pigs. 212, 213. Nuelei of first spermatocytes, telaphase. 



Pigs. 214, 215. Pole, views of monaster*, first maturation mitosis. 



Fig. 210. Lateral view of the plurivalent chromosome of the first maturation mitosis, showing the mantle lihre 



attachments. 

 Pigs. 217, 218. Lateral views of successive anaphases, first maturation mitosis. 



LimnobiUcx limuiUi. 

 Fig. 219. Nucleus of first spermatocyte, rest stage. 



I'rioiddiis eristaius, fflgs. 220-225. 



Figs. 220-222. Spermatogone nuclei, rest stage. 

 Figs. 223, 224. Spermatogone monasters, pole views. 

 Fig. 225. Nucleus of first spermatocyte, rest stage. 



Milyas rdnclt/.s, Fi;/s. 226-228. 

 Figs. 220-228. Nuclei of first spermatocytes, rest stage. 



Hygotrechus up.. Fig*. 220-281. 



Fig. 229. Spermatogonic monaster, pole view. 



Fig. 230. Nucleus of first spermatocyte, synapsis stage. 



Fig. 231. Pole view of monaster, first maturation mitosis. 



LimnotrccJms marginatus, Figs. 232, 233. 



Fig. 232. Nucleus of first spermatocyte, rest stage. 



Fig. 233. Pole view of monaster, first maturation mitosis. 



1'clocoris femorata. 

 Fig. 234. Spermatogonic monaster, pole view. 



Zaiiha sp., Figs. $85-288. 



Fig. 235. Spermatogonic nucleus, rest stage. 



Figs. 236, 237. Spermatogonic monasters, pole views. 



Pig. 238. Pole view of monaster, first maturation mitosis. 



