230 ILWINIS BIOLOGICAL MONOGRAPHS |S1I 



EXPLANATION OF PLATE 



Fig. 87. Boihriocephalus manubriformif, transection thru anterior region. 



Fig. 88. Boihriocephalus manubriformis , cirrus-sac and vaginal bulb from a transection. 



Fig. 89. Boihriocephalus occidentalis, cirrus-sac from a transection. The reference line it 



0.1mm. long. 



Fig. 90. Clesiobothrium crassiceps, transection thru the ovary. 



Fig. 91. Ahothrium rugosum, transection thru the ovary. 



Fig. 92. Abothrium crassutn, transection thru the ovary of a specimen from Salmo solar. 



