4G 



" TERRA NOVA" EXPEDITION". 



Order TETRAPHYLLIDEA. 

 Fam. PHYLLOBOTHRIIDAE. 



Anthobothrium, Van Beneden, 1850. 



26. AiitliolxitIiri.il in wyatti, Leip. and Atk. 



Anthobothrium wyatti, Leiper and Atkinson, Proc Zool. Soc:, 1914, p. 225. 



Scolices small, unsegmented. Four large auricular appendages, each occupied by two tandem suckers. 

 A brightly pigmented band crosses the neck in the living state. 



Attached to the wall of the rectum of the fish Trematomus bernacchii were a large 

 number of small Cestode scolices characterised in the living state by the presence of a 

 bright red ring of pigmentation in the neck. There are four auricular discs, each 

 carrying a pair of round suckers. The rostellum also is occupied by a muscular sucker. 



These parasites bear some resemblance to the forms figured by Van Beneden in 

 1861 as typical of his genus Anthobothrium, and they are accordingly referred to that 

 genus. The scolex measures l'18mm. in length by 0'53mm. in breadth. There is no 

 indication of segmentation. The auricles measure 0"3 mm. by 0"18mm. The suckers 

 on each side lie one in front of the other ; the anterior measuring O'l mm. in diameter, 

 the posterior being slightly larger, viz., O'l 2 mm. 



Or/ana, Leip. and Atk. 

 Oriana, Leiper and Atkinson, Proc. Zool. Soc, 1914, p. 226. 

 A Tetraphyllid with large quadrate discoidal head carrying four round suckers. Rostellum absent. 



27. Oriana wikoni, Leip. and Atk. (PI. V, figs. 32, 33, 34.) 



Oriana wilsoni, Leiper and Atkinson, Proc. Zool. Soc, 1914, p. 225. 



Segments all immature. Strobila 13 cm. long. Head discoidal, 3 mm. in diameter, quadrate in outline, 

 4 round suckers present terminally. Neck very slender. Testes arranged in two definite groups of 7-8 

 and 17-18. Near to Diplobothrium. 



Host.— These Cestodes were obtained by Mr. D. G. Lillie from the intestine of a 

 Rorqual (Balaenoptera borealis, Lesson), caught off the Bay of Islands, New Zealand 

 (Stat. 149). 



External Appearance. — The worms vary very greatly in size and length and in 

 the number and shape of their segments. None contain eggs. The len'gth of the 

 unsegmented part, or neck, varies also very greatly, sometimes being as much as 3 cm. 

 The description is of an average specimen and will hold for the majority obtained: 



Head. — The length of the strobila is 13 cm. to 14 cm. The head is discoidal, 

 anteriorly flattened and square-sided, varying from 2 • 8 mm. to 3*2 mm. in diameter. 

 The neck is exceedingly narrow and is attached to the head much as is the stem to 

 the bowl of a champagne-glass. The four suckers, which almost completely occupy the 

 anterior surface of the head, are nearly circular. They have a diameter, outside, of 

 1 -35 mm. and, inside, of 0"76 mm. They are fairly deep and are embedded for some 

 distance in the substance of the head. There is no rostellum and there are no hooks. 



