Chap. XIII.] 



Go NADS OF FLUKE. 



487 



three or four primary ducts ; these unite at a common 

 point, one for each testis. Thence there pass forwards 

 two deferent ducts, which open into a common seminal 

 reservoir. The reservoir is continuous anteriorly with 







.. - 



!' -'if *"--^. 1 - , , _-**^ * 



ml ^-r~i^ & 



Fig. 204 B. Female Apparatus of Bothriocephalus latus. 



c. Cirrus; cb, cirrus sheath; ov, ovaries; d, vitellaria ; d', their ducts: od, 

 oviduct ; u, uterus ; u', its orifice ; v, vagina ; !/, its orifice ; yl, shell- 

 producing glands. (After Summer and Landois.) 



a ductus ejaculatorius, which is coiled and looped, and 

 which forms a papilliform projection at the base of 

 the genital sinus, which is common to the male and 

 female ducts, and is placed just behind the ventral 

 sucker. The terminal portion is protrusible, and 

 functions as a penis ; it is ordinarily known as the 

 cirrus. In the female organs the germ glands are 

 quite distinct from the yolk glands ; the former make 



