PLATE V. 



Fig. 32. — Oriana wilsoni, Leiper and Atkinson; ex Balaenoptera borealis. Head, anterior surface, showing 

 four round suckers ; no rostellum. 



Fig. 33. — 0. wilsoni. Head seen laterally, showing mode of attachment of slender neck. 



Fig. 34. — 0. wilsoni. Segments. 



Fig. 35. — Tetrarhynchus sp., ex Lcpidopus caudatus. Larva removed from cyst. 



Fig. 36. — Abothros carcharias, Welch, ex Carcharias, sp. Complete specimen ; only three of the four 



Fig. 38. — D. coatsi. Mature segment ; c, cloaca ; d, uterine pore ; e, uterus, containing eggs ; /, testes. 

 Fig. 39. — Plerocercoid larva, ex Trematomus bernaccltii. 



rostella are shown. 



Fig 



37 



Diboihriocephalus coatsi, ex L&ptonyckotes weddelli. Complete strobila. 



Fig, 



Fig, 



Fig 



40 



41 



42 



■Dibothriocephalus lashleyi, Leiper and Atkinson ; ex Leptonychotes weddelli. Head. 

 D. lashleyi. Segments ; lettering as in Fig. 38. 

 Plerocercoid larva, ex Trematomus bernacchii. 



