PARASITES OF THE ALIMENTARY TRACT 61 
Tenia Plicata is by far the largest of the three. In 
length it ranges from 1} to 8 centimetres. Its width 
is about 15 millimetres. The head is more flattened than 
that of Tenia perfoliata, and is destitute of flaps. It 
carries four round terminal suckers. 
Tenia Mamillana is the smaller. In length it ranges 
from ro to 30 millimetres, and its width is about 5 milli- 
Fig, 12.~HEAp oF TANIA Fic, 13.—TAnNiA 
PERFOLIATA. PERFOLIATA. 
metres. Its head is peculiar—short and broad, and 
somewhat resembles a rose-bud in shape. The suckers 
are merely slits, and are laterally placed. 
Symptoms.—In the horse there is usually little evi- 
dence to show that Tznia are present in the intestine. 
Anemia and slight debility may be observed when the 
number present is very large. Cases of septic peritonitis 
following perforation of the intestine have been recorded, 
but must necessarily be very rare. 
Treatment.—When the presence of tapeworms is 
