PARASITOLOGY. 



95 



rig. 33.-F1LARIA Papil- 



LOSA. 



a, Male. 



b, Female. 



c, Spiral Tail of Male. 



d, Cephalic Extremity. 



DistribiUion, — Found in Amer- 

 ica, Asia, Philippine Islands, etc. 



Description. — The body is long, 

 thread-like, and white in color. 

 It is attenuated at both ends. Sur- 

 rounding the mouth are two rings, 

 each provided with four papillae. 

 The tail of the male is coiled in a 

 spiral manner; the tail of the fe- 

 male is straight or slightly curved. 

 The male is two to three inches 

 long; the female three to four 

 inches; the female is ovoviviparous. 



A7ii7nals Infested. — The horse, the ass and the mule. 

 Parts In/ested.— Peritoneal cavity, and, by migra- 

 tion, other parts of the body, as scrotum, pleura, 

 between muscles, etc. 



Injury to Host. — The Filaria Papillosa are common 

 in horses in the United States, but are found only in 

 small numbers and do not produce serious results. 

 If found in large numbers they may cause anemia, 

 debility and death. This filaria while in the imma- 

 ture state may find its way to the eye, and the worm 

 can then be seen floating in the aqueous humor. By 

 opening the anterior chamber the worm can be taken 

 from the eye. The name, Filaria Oculi, or Filaria 

 Oculi Equina, has been given to this worm when 

 found in this locality. When the worm finds its way 

 to the eye it may cause inflammation, swelling of the 

 eye and closure of the lid. The cornea may become 

 opaque. 



