222 ILUNOIS BIOLOGICAL MONOGRAPHS [510 



EXPLANATION OF PLATE 



Pig. 65. Haplobotkriufn globuliforme, transection thru primary scolex. 



Fig. 66. Haplobotkriutn globuliforme, transection thru the ganglionic mass behind the pro* 



boscides. The reference line is 0.1mm. long. 

 Fig. 67. Haplobotkrium globuliforme, transection thru a single proboscis bulb. 

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

 Pig. 69. Botkriocephalus cuspidatus, transection thru an anterior segment. 

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



section. 



