34 ENTOZOA. 



altogether (substituting Bicroccelvum, as "Weinland lias done) than 

 to place the fascioles under any other title than that indicated by 

 Linneus. 



Campula. — The propriety of the view above advanced is ren- 

 dered more cogent by the discovery of an intermediate type of 

 fluke, whose digestive coeca, instead of displaying the dendritic 

 character of the Fascioles, offer a peculiar zigzag-hke form ; hence 

 the generic title (Kafnru\o<;) . In April, 1855, I procured about fifty 

 specimens of this trematode (Fig. 10) from the liver of a common 

 porpoise {Delphinus phoccena). They occupied the peripheral 



y 



.<^. 







Fia. 10.— Campula oblonsa, Colloid ; from the liver of the Porpoise. X 15 diam.— Original. 



extremities of the biliary ducts, which were, in the situations 

 occupied by the flukes, remarkably thickened and knotted. As 

 many as seventeen individuals were found associated at one spot. 



Bilharzia. — Up to the time of Bilharz's announcement of the 

 existence of the Distoma hcematobmm, which he found so abundant 

 in the people dwelling on the borders of the Nile, almost all the 

 flukes were considered to be hermaphroditic, or, in other words, 

 each individual was furnished with both male and female organs ; 

 the only exception being that of the Distoma fillicolle, regarded by 

 Rudolphi and Dujardin as a species of Monostoma. Guided by this 

 fact and by the circumstance of other co-existing pecuharities, I 

 formed a distinct genus for the reception of the Egyptian fluke. 



