580 



DR. W. A. CUNNINGTON ON THE 



Name of Species. 



Taiigaii- Victoria 

 jdka. Nyanza. 



Nyasa. 



Albert 

 Nyanza. 



Other parts of 

 the world. 



Trichocerca elongata 



„ iernis 



„ lougiseta 



macera 

 rattus 



„ scipio 



., stylata 



Dinrella stylata 



„ tenuior 



„ tigris 



Synchaeta obloiiga 



„ pectinata 



„ tremula 



Polyarthra trigla 



Sphyrias lofxiana 



Asplanchna brightwellii .. 



,, intermedia .. 



Asplanchnopus multiceps 



Testudiiiella patina 



trilobata 



Order Rhizota. 



Floscularia ringens 



Limnias melicerta 



Ptygnra mucicola 



Sinantherina spinosa ., 

 Conochilus hippocrepis 

 Collotheca ornata 



P 

 P" 



Order Bdelloida. 



Philodina citrina ... 



„ emini . . . 



„ roseola ... 



Rotifer macroceros 



,, macrurus ... 



„ vulgaris ... 



„ actiniirus ... 



E§ 



P§ 



P§ 

 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, Australi 

 Cosmopolitan. 



N. America. 



Europe, N. America, Australia. 



Europe, N. America. 



Cosmopolitan. 



Australia. 



Cosmopolitan. 



N. America. 

 Cosmopolitan. 



Eui'ope, N. America, Australia. 



Cosmopolitan. 

 Cosmopolitan. 



§ 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 a.re given for Tanganyika, 25 for Victoria 

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

 j'ecords 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 aifords a truer basis 

 of comparison than those given above, since the forms collected 

 from the surrounding neighbourhood are almost unknown except 

 for Nyasa. Disregarding Albeit Nyanza — from which infoima- 

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

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



