1907. 



MEDUS.E FROM AFRICAN LAKES. 



Text-fi^. 173, 



647 



Youns; LimnocniJa, 6 millimetres in diameter, with five radial canals. 



Text-fig. 174. 





S.O. «^ 

 Portion of periphery of Limnocuida, 22 millimetres in diameter. 



