168 CITUOMOSOMES IN THE SPERMATOGENESIS OF THE HEMIl'TEJfA HETEROPTERA. 



Figs. 28-30, Munnitlia luijens. 

 Fig. 28, sperraatogouic monaster (v. 1901i, Fig. 31) ; the autosomes C'anil c are seen from their euds, ami it couUl 

 not be (leoitled whether E, e is one or two elements. 

 Fig. 29, pole view of first maturation spindle. 

 Fig. 30, pole view of second maturation spindle. 



Figs. 31-37, Cosmoprpla caniifcx. 

 Fig. 31, spermatogonio monaster. 

 Fig. 32, late prophase of first iijaturation division. 

 Fig. 33, pole view, first maturation spindle (v. 19016, Fig. 41). 

 Fig. 34, lateral view, first maturation spindle (v 19016, Fig. 40). 

 Figs. 35, 36, pole views, second maturation spindle. 

 Fig. 37, chromosomes of a spermatid. ■ 



Figs. 38, 39, Niznra hihtiis. 

 Fig. 38, spermatogonic monaster (v. 19016, Fig. 44). 

 Fig. 39, nucleus of postsynapsis stage. 



Figs. 40-45, Jlinclij/mnin sp. 

 Figs. 40, 41, spermatogonic monasters (with 41 v. 19016, Fig. 47). 

 Fig. 42, oblique lateral view, first maturation spindle. 

 Fig. 43, pole view, first maturation spindle. 

 Fig. 44, second maturation spindle. 

 Fig. 45, pole view of the same stage. 



Figs. 46-52, Peiillus coiifluens. 

 Fig. 46, spermatogonic monaster. 



Fig. 47, plasmosome and diplosomes of the early prophase of the first maturation division. 

 Fig. 48, pole view, first maturation spindle. 



Fig. 49, pole view of ii daughter plate of the first maturation mitosis. 

 Fig. 50, pole view, second maturation spindle. 



Fig. 51, lateral view of the same stage (one of the elements not shown). 

 Fig. 52, chromosomes of a spermatid. 



Figs. 53-58, Cirmis ihlius. 

 Figs. 53, 54, spermatogonic monasters. 

 Fig. 55, daughter plate of spermatogonic division. 

 Fig. 56, daughter plate, first maturation division. 

 Fig. 57, pole view, second maturation spindle. 

 Fig. 58, lateral view of the same stage. 



Figs. .59-65, TrhliDjKpla Miniviltota. 

 Fig. 59, spermatogonic monaster (v. 19016, Fig. 65). 

 Figs. 60, 61, spermatocytic nuclei, hite growth period. 

 Fig. 02, spermotocjtic nucleus, rest stage. 

 Fig. 63, idem, early prophase of first maturation division. 

 Figs. 64, 65, first maturation spindles. 



PL.4TE X. 



Figs. 66-68, Trichopepla scmivitliila. 

 Fig. 66, second maturation spiudle. 

 Fig. 67, pole view of the same stage. 

 Fig. 68, chromosomes of a spermatid. 



