22O THE ROUND WORMS. 



Northern Africa and, gaining access to the stomach through drinking 

 water, it wanders to the pharynx, nares and even trachea. Manson 

 refers, to a case of obstinate epistaxis and headache caused by a leech 

 in the nostril. 



Haemadipsa ceylonica. These are land leeches found in India, 

 Philippines, Australia and South America. They are only about i 

 inch long and are slender. They leave the damp earth to climb shrubs 

 and from there to drop on animals or man passing through the forest. 

 The bites are painless, but may be followed by ulcers. They may get 

 into the nostrils. 



