96 PARASITOLOGY. 



FiLARiA Cervina (Filaria — a hair). 



Synonym. — Filaria Labiato-Papillosa; Setaria La- 

 biato-Papillosa. 



Distributio7i. — Very common in the United States, 

 India, etc. 



Description. — In size, shape and color this worm 

 resembles the Filaria Papillosa except that the head 

 is provided with four papillae, the four outer ones 

 being absent. The female is furnished with two 

 lateral caudal papillae. Like the preceding it is 

 ovoviviparous. 



Parts Infested. — Peritoneal cavity and by migration 

 other parts of the body of cattle. The worms are 

 found free; occasionally one is found imbedded in a 

 roll of fat just under the serous membrane. 



Injury to Host. — In the United States it is not 

 found in large numbers, and no serious results are 

 noted. Deaths due to infestation with myriads of 

 these worms are reported from India. They have 

 been reported as finding their way to the chambers 

 of the eye. 



Filaria Immitis (Im — in ; mittere — to send) . 



Synonym. — Diro'iilaria immitis. 



Distribution. — America, Denmark, Italy, China, 

 Japan, Brazil and other countries; especially preva- 

 lent in low, marshy places. 



Description. — A long, thread-like worm, white in 

 color and obtuse at both ends. The mouth is circu- 

 lar and surrounded by six small papillae. The tail 

 of the male is coiled in a spiral manner, making about 

 three and one-half turns, and is provided with twenty- 

 two papillae ; the spiculae are of unequal length. 



