440 



PARASITES OF ANIMALS 



I have said that tapeworms prove fatal to young birds, 

 even to nestlings. A notable instance of this is recorded by 

 Mr Eames. The parasites were examples of Tania angulata. 

 Apart from the epidemiological aspects of the subject, it is not 

 uninstructive to notice the variety of helminths that infest the 

 common fowl and game birds. Accordingly, I append a similar 

 but more extended list than that previously given in the 

 supplement to my introductory treatise : 



In regard to this list I can only afford space to remark that 

 several of the species are possibly mere varieties. Some of the 

 worms are of great interest. It occasionally happens that 

 Distoma ovatum is found in the albumen of the fowl's egg, and 

 it is even more common to obtain Ascaris inflexa from the same 

 situation. For a recent example I am indebted to Dr Walker, 

 of Peterborough. Spiroptera helicina resides in the feet, occa- 

 sioning enlargement of the joints and consequent distress to 

 the bearer. Probably the most important in the list is my 

 Strongylus pergracilis. Here I may mention that on the 10th 

 of April, 1878, I received a letter from Dr Manson, of Amoy, 



