AVIAN CESTODES. 435 



through the mature uterus the appearance of a number of detached 

 cavities containing ripe eggs is often presented. It is, perhaps, 

 this condition which has led to the explanation by v. Linstow * 

 of the clusters of ripe eggs seen in " Tcenia strittJiionis." 



Text-figure 4. 











-i/t. 



Ca., 

 -Pa. 



Horizontal section through mature uterus, showing opening into parutcriue 

 organ. 



Ca. Mass of .calcareous bodies at orifice of uterus, l. Lateral water-vascular tube. 

 Fa. Paruterine'organ. Ut. Uterus. 



The paruterine organ of this species has been figured by 

 * Arch. mikr. Anat. xlii. 1893, pi. xxviii. fig. 14. 



