466 C. F. ROUSSELET ON THE GEOGRAPHICAL 



up their study, and the Rotatorian fauna of the Dominion there- 

 fore remain quite unknown. 



From South America eighty species have been recorded by 

 Prof, von Daday, in plankton collections made in Paraguay, of 

 which three only are described as new, all the others being 

 already known in Europe. 



During the British Association meeting in South Africa in 

 1905, I myself collected in various widely separated localities 

 — Capetown, Orange River Colony, Transvaal, and Rhodesia — 

 in all 63 species, all of which except one were already known 

 in other parts of the world. Even in the Zambesi River, where 

 I obtained 38 species in pools just above the Victoria Falls, 

 all of them without exception were already known outside 

 Africa. Gunson Thorpe, W. Milne, Thomas Kirkman, and 

 James Murray have recorded about 100 more species from other 

 parts of South Africa, of which less than half a dozen were new 

 forms. 



From Central Africa I have examined collections made by 

 Dr. W. A. Cunnington in Lake Tanganyika and adjacent rivers ; 

 and though this material was very poor in Rotifera, I obtained 

 about 40 species, all known already in Europe. 



In moss collected in the Sikkim Himalaya in India Mr. 

 James Murray observed 36 species, mostly Bdelloids, of which 

 5 only were as yet unknown in Europe. 



As regards distribution in Arctic and Antarctic regions, I may 

 mention that Dr. Bergendal has recorded 82 species, belonging 

 to 38 genera, from Greenland, where the pools and shallow 

 lakes are frozen, often to the bottom, for eight months in the 

 year. With the exception of a few new species found there for 

 the first time, all these forms belong to the ordinary European 

 fauna. 



In collections from two lakes in Iceland, Dr. Wesenberg-Lund 

 found 9 species of Rotifers, all having a wide distribution in 

 Europe. 



From Ross Island, in the Antarctic continent, Mr. James 



