222 ILLINOIS BIOLOGICAL MONOGRAPHS [510 



EXPLANATION OF PLATE 



Fig. 65. Baplobotkrium globuliforme, transection thru primary scolex. 



Fig. 66. H aplobolhrium globuliforme, transection thru the ganglionic mass behind the pro- 



boscides. The reference line is 0.1mm. long. 

 Fig. 67. E aplobolhrium globuliforme, transection thru a single proboscis bulb. 

 Fig. 68. Marsipometra hastata, toto of ripe proglottis. 

 Fig. 69. Bothriocephalus cuspidatus, transection thru an anterior segment. 

 Fig. 70. Bothriocephalus cuspidatus, toto of ripe proglottides, posterior in deeper optical 



section. 



