580 



DR. W. A. CUNNINGTON ON THE 



Name of Species. 



Tangan- 

 yika. 



Victoria ^^^^ Albert 

 Nyanza. " Nyanza. 



Other parts of 

 the world. 



Trichocerca elongata 



„ iernis P § 



„ longiseta P § 



„ macera P § 



., rattus 



scii)io 



sty lata P 



Diurella stylata 



„ tenuior 



„ tigris 



Syncha^ta oblonga P § 



„ pectinata 



„ tremula 



Pol3'^arthra trigla P 



Sphyrias lofuana P § 



Asplanchna brightwellii 



,, intermedia P 



Asplanchnopus multiceps ... 



Testudinellii patina 



trilobata P § 



Order RnizoTA. 



Flosc\ilaria ringens 



Limnias melicerta 



Ptyguva mncicola P § 



Sinantherina spinosa 



Conochilus hippocrepis 



Collotheca ornata 



Order Bdelloida. 



Philodina citrina 



„ emini 



„ roseola 



Rotifer macroceros 



„ macrurus 



vulgaris 



„ actiniirus 



42 genera 16 P. 



E§ 

 13 P. 



P 



P§ 

 P 

 P 

 P§ 



P§ 

 P 



P 



Cosmopolitan. 

 Europe, N. America. 

 Cosmopolitan. 

 Europe, N. America. 

 Cosmopolitan. 



Europe, S. America. 

 Europe, N. America. 

 Cosmopolitan. 



Europe, N. America, Australia. 

 Cosmopolitan. 



N. America. 



Europe, N. America, Australia. 

 Europe, N. America. 

 Cosmopolitan. 



Australia. 



Cosmopolitan. 



N. America. 

 Cosmopolitan. 



Europe, N. America, Australia. 



Cosmopolitan. 

 Cosmopolitan. 



37 P. 



4P, 



105 species and subspecies... 1E,28P. 1E.24P. 1E,84P, 4 P. 



(29) (25) (85) 



§ Not actually recorded from the lake itself, but from within its drainage area. 



Attention has already been called to the fact that the Rotifera 

 of Nyasa are in all probability better known than those of the 

 other lakes. Of 105 forms enumerated, 85 are reported from 

 that lake, while only 29 are given for Tanganyika, 25 for Victoria 

 Nyanza, and 4 for Albert Nyanza. Examination of the Nyasa 

 records shows that a much smaller total has been observed in the 

 lake proper, and indeed it is the latter figure, compared with cor- 

 responding figures from the other lakes, which affords a truer basis 

 of comparison than those given above, since the forms collected 

 from the surrounding neighbourhood are almost unknown except 

 for Nyasa. Disregarding Albert Nyanza — from which informa- 

 tion is very meagre, — the totals of those Eotifers taken within 

 the limits of the lakes themselves are found to be: — Nyasa 22, 



