60 VETERINARY PARASITOLOGY 
Gastrophilus hemorrhoidalis may be removed from 
the rectum by injections of salt solution. 
Bots, when present in the pharynx, may be removed 
by the use of the above mixture applied on a long brush 
or on a sponge fastened on a stick. 
Among the parasites sometimes found in the stomach 
of the horse, Ascaris megalocephala must be included, 
but will be discussed later. 
Ganglyonema scutatum may sometimes be found in the 
cesophagus. 
Intestinal Parasites of the Horse. 
TANIA. 
The Tenia which inhabit the intestine of the horse 
are only three in number, and all belong to the Anoplo- 
cephaling (the unarmed tapeworms). 
The three Teenia are : 
1. Tena perfoliata. 
2. Tema plicata. 
3. Tenia mamillana. 
Of these, Tenia perfoliata is by far the commonest. 
It inhabits the large intestine, particularly the czecum. 
Tenia mamillana is very rare, and has seldom, if ever, 
been seen in horses in the British Isles. It inhabits the 
small intestine, as does also Tenia plicata, which is by 
no means uncommon. 
Tenia Perfoliataa—This worm ranges from 25 to 
4o millimetres in length (1 to 1? inches), and is about 
ro millimetres (? inch) wide. The head is four-sided, 
large, and rounded, while the four suckers are rounded 
and placed at the extreme end of the head. 
Tenia perfoliata may easily be recognized by the 
presence of two flaps on each side, which project back- 
wards, and are quite easily visible to the naked eye. 
