222 DR. R. T. LEIPER AND SURGEON E. L. ATKINSON 
Mr. Boulenger pointed out that the neck, which exactly 
equalled the shell in length, was not as represented in the single 
stuffed specimen in the British Museum, without any folds, but 
that the skin was loose, with numerous folds, a pair of very 
strong lateral ones extending from the sides of the head down 
almost the entire length of the neck. 
The tortoise, although very lively, is extremely shy, and on 
one’s approach has the peculiar habit of withdrawing its head, 
standing as high up as possible on its hind limbs, and bending 
over until the fore part of the carapace almost touches the 
ground. The purpose of this perfgrmance seems to be in order 
to protect the head and neck which, owing to the peculiar shape 
of the front part of the shell, remain completely exposed on 
withdrawal. 
The shell in this species being of extraordinary thinness and 
lightness, the creature is able to progress at a pace which, 
compared with that of the other tortoise in the collection, is 
remarkable for its rapidity. 
Helminthes of the British Antarctic Expedition, 1910-1913 *. 
Dr. R. T. Lerper, M.B., F.Z.8., and Surgeon E. L. Arkinson, 
R.N., gave a lantern demonstration of the Helminthes collected 
by the British Antarctic (‘Terra~-Nova’) Expedition, 1910-1913. 
In all, thirty-seven species of Helminthes were collected by 
Surgeon Atkinson on the voyage of the ‘ Terra-Nova,’ and whilst 
a member of the shore party. One species was a free-living 
Nematode, Leptosomatum setoswm, the remainder were parasitic. 
Of these latter, 
8 species had been recorded from the Antarctic zone, viz. :— 
In Leptonychotes weddelli: 
Ascaris osculata Rud. 
Ascaris radiata v. Linstow. 
Ascaris rectangula v. Linstow. 
Corynosoma antarcticum Rennie (=C. hamanni v. L.). 
Dibothriocephalus mobilis Rennie & Reid. 
Dibothriocephalus coatsi Rennie & Reid. 
Diphyllobothrium perfoliatum Railliet & Henry. 
In Aptenodytes forstert : 
Anomotenia zedert (Baird), 
Free-living Nematode: 
Leptosomatum setosum v. Linstow. 
* From the Helminthological Department of the London School of Tropical 
Medicine. 
