96 PARASITOLOGY. 
Fivaria Cervina (Filaria—a hair). 
Synonym.—Filaria Labiato-Papillosa; Setaria La- 
biato-Papillosa. 
Distribution.—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. Pave hoptlherma 
Fitaria Lawerrs (Im—in; mittere—to send). 
Synonym.—Dirofilaria 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. 
