SYSTEMATIC NOTES 



39i 



Figs. 33-41. Priapocephalus grandis from Blue Whale. 33, longitudinal section through scolex of immature specimen embed- 

 ded in mucous ; 34, cross-section through part of longitudinal muscles ; 35, cross-section through part of longitudinal muscles ; 

 in segment with rudimentary genital organs; 36, cross-section of longitudinal muscles in mature segment; 37, sagittal section 

 of body showing uterine ducts and openings for discharge of eggs; 38, mode of egg-discharge; 39, cross-section of segment 

 showing uterine pores; 40, cross-section of cirrus-sac and vagina; 41, egg. 



