58^ 



DR. W, A. CUNNINGTON ON THE 



little information at hand concerning tliem. An account of 

 certain forms collected by Stulilmann at Bukoba, Lake Victoria, 

 is given by Collin (64), while other species which Fiilleborn 

 obtained in the neighbourhood of Nyasa have been identified by 

 Daday (76, p. 56). No Gasbrotricha were observed by me during 

 my expedition to the great lakes. The species * may be enume- 

 rated as follows : — 



1 . Lepidoderma squamatum. 

 A species well known in Europe and occurring also in North 

 America. A single specimen was collected in a pool near the 

 shores of Nyasa. 



2. Lepldodsrma hysirix. 

 Under this name Daday described a form obtained from the 

 same locality as the above. It has not been observed elsewhere. 



3, Ichthydium macrurum. 



This type was described as new by Collin, but tlie species rests 

 upon a diagrammatic figure and a very incomplete description. 

 It was found at Bukoba, a station on the shores of Yictoria 

 Nyanza, and has not been re-discovered, so that it may be looked 

 upon as a species of rather doubtful value. 



■ 



4, Chcetonotus formosus. 



Tins form, liRe the two species of Lepidoderma, has been 

 identified from the vicinity of Lake Nyasa. Previous to this 

 discovery it was only known from North America. 



5, Cluetonotus pusillus. 



A single specimen of this tj^pe, hitherto only recorded from 

 Paraguay, was isolated by Daday from material collected in the 

 Mbasi River close to its entrance into Nyasa. 



Two species of Cliadonotiis are, according to Collin, among the 

 Gastrotricha which Stuhlmann recorded from Lake Yictoria, bat 

 in neither case has it been possible to identify them further. 

 Brief notes made on the spot, accompanied in one case by a sketch, 

 form all the information available. It is doubtful whether either 

 of these types was observed in water from the lake itself. 



6. Gossea pauciseta. 



Another species previously known only from Paraguay. 

 Several specimens of this were obtained from a pond in the 

 Nyasa district. 



On a survey of this list the following facts appear. Five 

 species are on record from Nyasa, one of which is peculiar to that 



* For further particulars of these forms, consult Collin (64:, p. 9) and Dadaj^ 

 (76, p. 56). 



