70 WORM PARASITES. 



known as Cephalogonimus pellucid us, a transparent 

 reddish fluke about 9 mm. long. These were found 

 by Yon Linstow and Railliet. In the intestines 

 Neumann enumerates seven species, namely, JSoto- 

 cotyle triserialisj Distoma oxycephalum, Rud., D. clila- 

 tatum, Miram, D. lineare, Zeder, D. ovatum, D. ar- 

 matum, Molin, and Mesogonimus commatatas, Sons. 

 These, however, are not all distinct: dilatatum is un- 

 doubtedly the same as oxyceplialum: armatum is also 

 probably the same. 



None of these Trematode worms are of any patho- 

 logical importance, although, as is well known, they 

 often cause serious maladies in other animals. All 

 the Flukes that have two hosts undergo a compli- 

 cated metamorphosis, the early stages always taking 

 place in some water-mollusc. Those found in Gallus 

 domesticus have not had their life-histories worked 

 out. 



Parasites in the Egg. 



Occasionally parasitic worms are found in the 

 oviduct of Fowls, and, as we shall see later, a few 

 vegetable parasites also make their appearance. 

 These l guests ' found in the oviduct are quite acci- 

 dental, and not unusually they manage to enter the 

 ovum. They are purely of interest only and are of 

 no pathological importance. 



A Fluke [Distoma ovaium), a Nematode (Heterakis 

 inflexa), and fragments of Tapeworms (Cestoda) 

 have been recorded in Fowls* eggs. 



