No. 5.] THE CESTODE MONIEZIA EXPANSA. 



249 



nearly normal size, but empty. It will be noted that furrows 

 bounding /"anteriorly end very near the region of the oviduct on 

 both surfaces, and it seems probable that this abnormal condition 

 is due to the position and direction of these furrows. The posi- 

 tion of this set of organs as a whole is normal, and since the 

 anterior of the two dorsal furrows does not reach the edge we 

 find the pore in the middle of the edge/^-. 



The region/", although as large as some partial segments which 

 possess at least rudimentary genital organs, shows no trace of 

 any such. The ventral surface is cut by furrows in various 

 directions, and this is probably the reason why no ovaries appear. 

 The single pore at the edge of g is just between f and g, for the 

 two are not separated at the edge, so that there was probably no 

 tendency for another pore to arise in /. 



Inter-proglottidal glands appear in all the transverse furrows 

 which lie within the region of their occurrence, except the fur- 

 rows between c and d. Here the glands appear only near the 

 left ends of the furrows, but these portions are deeper and thus 

 more nearly normal than the rest of these furrows. 



\ 



Figure 23. 



This figure, a dorsal view, shows two segments at a later stage 

 of development, in which the uterus is formed, and the other 



genital organs have undergone degeneration. The two segments 

 are incompletely separated at the left, the ventral furrow being 



