20 



" TERRA NOVA" EXPEDITION. 



The Staff seized the opportunity afforded by a day's stay to make collections of the 

 fishes, birds and crabs. The parasites obtained were :— 



(a) Three species of Cestode from the Trinidad petrels {(Estrelata arminjoniana 



and CE. trinitatis) ; 

 (li) One species of Cestode from a Frigate bird (Fregata aquila or F. ariel) ; 

 (c) Two larval Tetrarhynchus from a small shark (Carcharias sp.) ; 

 ('/) Specimens of an Oligochaete, extracted from Land - crabs (Gecarci nus 



lagostoma, H.M.-E.). 



The stay of the ship was so brief that the material collected is in no way indicative 

 of the extent of the parasitic Fauna of the Island. 



S. Trinidad would probably afford a rich field for the further investigation of 

 parasites, as many hosts, especially birds and fishes, abound and are easily procurable. 



'Temperate Zone. — On the 3rd October, 1910, when the "Terra Nova " was in 

 Lat. 42° 17' S., Long. 111° 18'E. (Stat. 156), a Great Grey Shearwater (Puffinus cinereus) 

 was caught, and provided one species of Cestode, Tetrabothrius heteroclitus. On the 6th 

 October, 1910, when the ship was in Lat. 41° 46' S., Long. 121° 39' E. (Stat, 159), 

 a Sooty Albatros or Hutton's Albatros (Phcebetria palpebrata) was caught. This 

 provided two species of Cestodes, one unfortunately only in fragments and without 

 ;i head. These proved to be : — 



(a) Tetrabothrius nelsoni, n. sp. 



(b) Unrecognizable. 



The following parasites were collected at the Bay of Islands in New Zealand, in 

 Lat, 35° 15' S., Long. 174° 10' E. (Stat. 149), by Mr. D. G. Lillie, Biologist to the 

 Expedition, when he was on a whaling cruise with a Norwegian ship : — 



(a) From a Humpback Whale (Megaptera) numerous specimens of a Filariid 

 Nematode, Crassicauda crassicauda (Creplin), from the renal tubules. 



(/>) From a Rorqual (Balaenoptera borecdis, Lesson) one specimen of a Cestode 

 and some pretty examples of the curious Pomporhynchus turbinella. 



(<■) From a Shark (Mustelus antarcticus) a Nematode, and 



(d) From a Barracouta (Lepidopus caudatus) some larval Nematodes encysted in 



the caecum, and with them a larval Tetrarhynchus. 

 In Lat. 52° 20' S., Long. 167° 30' E. (Stat. 165), off the Campbell Islands :- 



(e) A Mollymauk (Diomedea melanophrys) was caught and provided some 

 Nematodes. 



Antarctic Zone. — The larger portion of the collection of parasitic worms was made, 

 however, in the vicinity of Cape Evans in Lat. 77° 38' S., Long. 166° 24' E. (Stations 

 312, 326, etc.), during the winter months of 1911. In the succeeding year conditions 

 were exceedingly unfavourable, and the collection could only be added to very slightly. 



