ioS'I UR. W, A. CUXNINGTON ON THE 



little infoi'ma-tion at hand concerning them. An account of 

 C3i-fcain foi'ms coUeofced by Stalilmann at Bakoba, Lake Victoria, 

 ia 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 squamatuin. 

 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. Lepldodsrmci hystrix. 

 Under this name Daday described a form obtained from tlio 

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



3. Icliihydmm macrurum. 



This type wa,s described as new by Collin, but the species rests 

 upon a diagi'aminatic figure and a very incomplete description. 

 It was found at Bukoba, a station on the shores of Victori;i. 

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

 upon as a species of rather doubtful value. 



4. Ghcetonokos formosus. 



This form, lii<:e 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. C/icetonoiivs jjusillus. 

 A single specimen of this type, 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 Chretonotas are, according to Collin, among the 

 Gastrotricha which Stuhlmann recorded from Lake Victoria, but 

 in neither case has it been possible to id'entify them further. 

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

 form all the information available. It is doubtful whether either 

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



6. Gosseco 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 tha,t 



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

 (76, p. 56). 



