BILHARZIA. 



35 



employing for this purpose tlie original discoverer's name. Since 

 this was done I have observed that several foreign helminthologists 

 have acted in a similar manner, but, as usually happens in such 

 cases, they have employed different generic titles, so that the nomen- 

 clature has become rather complicated. However, letting this pass, 

 the genus Bilharzia, in itself so peculiar, is only yet known to 

 infest man and monkey. Here, it must be admitted, is an inter- 

 esting circumstance, admirably suited to the taste of those who 



■ vV 



Fig. 11. — Upper third of Eilhaezia hcematobia, Cobbold ; from the portal vein of an Airicau 

 Monkey [Cerco-pithecus fidiginosus) . X 10 diam.— Original. 



are on the look-out for afl&nities of habit between bimana and 

 quadrumana. The Oercopithecus fuliginosus is an African monkey, 

 and, doubtless, in its native haunts it procures the larv^ of its 

 Bilharzia from the same sources as our brethren in Egypt. Up to 

 the present time we are uninformed as to the habitat and charac- 

 teristics of its larval state, but Griesinger conjectures that the 

 yomig exist in the waters of the Nile, in the fishes which therein 



