100 ILLINOIS BIOLOGICAL MONOGRAPHS 1220 



EXPLANATION OF PLATE 



Fig. 99. — Gordius robusius, section thru cloacal ganglion of same female as Fig. 95; X 105. 

 Fig. 100.— G. robusius, section slightly posterior to that of Fig. 99; Intestine enters cloaca; 



X 105. 

 Fig. 101. — G. robusius, sagittal section thru cloacal ganglion of male; crescent in process of 



formation; X 105. 

 Fig. 102. — G. robusius, same section as Fig. 101; X 340. 



Fig. 103. — Paragordius varius, cross section thru female that has deposited its eggs; X 70. 

 Fig. 104. — P. varius, tangential section thru developing adult cuticula; areolae in the process 



of formation; X 400. 



