468 0. F. ROUSSELET ON THE GEOGRAPHICAL 



Mr. Shepliard, and afterwards found by me in Rhodesia between 

 Bulawayo and the Victoria Falls. 



Megalotrocha semibullata was first found by Gunson Thorpe at 

 Brisbane, Australia, then recorded in New Guinea, then in 

 Switzerland by Dr. Weber, then in Natal by Hon. Thos. 

 Ivirkman. 



Jlegalotrocha spinosa was first discovered in China by Gunson 

 Thorpe, was then found in Switzerland by Dr. Weber, then by 

 myself at a station near Gwaai in Rhodesia, and lately in 

 Paraguay by Prof, von Daclay. 



C onochiloides nutans was first obtained by Dr. Seligo in the 

 Stuhmer Lakes in Germany, afterwards near Ploen by Voigt,. 

 then in Bohemia by Hlava, and finally by myself in a railway 

 water tank at Norton Station, Mashonaland. 



Xotops brachionus var. spinosus. In 1900 Mr. Thomas sent 

 me some dried mud from the bottom of a dried-up pool in 

 Rhodesia. I placed this in water, and after a few days this 

 Rotifer, then new, was hatched from some resting egg, and came 

 to life in my tank. A short time afterwards specimens of this 

 same species were sent to me by Hon. Thos. Kirkman from Natal r 

 and quite recently it has been found near Sofia in Bulgaria by 

 Dr. Consuloff. 



Ploesoma lenticulare was first found in Lake Erie, in America,. 

 by Vorce and Herrick, then in Sweden by Jagerskiold, in Galicia, 

 by Wierzejsky, in Finland by Levander and Stenroos, in Ireland 

 by J. Hood, and by myself in a railway water tank in Rhodesia. 



Pedalion mirum was first found in 1871 near Clifton, in 

 England, by Dr. Hudson, then in numerous places all over 

 England ; also in Germany, Finland, Switzerland, United States. 

 It is also recorded by Gunson Thorpe. from a rock pool on Dunk 

 Island, oft' Queensland, Australia, and in a pool formed in a 

 hollow tree in Fiji, and finally by myself in a streamlet in the 

 Matoppos, Rhodesia. 



These examples of the occurrence of rare species of Rotifera in 

 widely separated and distant lands will suffice to show the ex- 



