w. H. DALRYMPLE. 
3*4 
It may be of interest to note a few of the tapes of the various 
domestic animals ; and it may be stated, that although a num¬ 
ber of these platlielminths are known in the adult stage to be 
peculiar to different animals, this is not the case, in every in¬ 
stance, with regard to their cystic or hydatid form. 
In the alimentary canal of the equidae, three species of taenia 
have been observed, but, so far, nothing whatever is known of 
their cystic form. These are ; The taenia plicata, the taenia 
mamillana, and the taenia perfoliata. 
Cattle, also, have three species, and like those of the equidae, 
they are entirely unknown in their cystic form. They are the 
taenia alba, the taenia expansa, and the taenia denticulata. 
It is said, that, after the dog, the sheep most freqently har¬ 
bors the greatest number of taeniae in its intestines. Those of 
this ruminant belong to eight distinct species, all of their cystic 
forms being unknown. They are as follows : The taenia expansa 
and the taenia alba, both of which are common to the ox and 
sheep. The taenia fhnbriata, the taenia benedeni, the taenia 
vogti, taenia ovilla, taenia centripunctata, and taenia globipunc- 
tata. 
It seems rather wonderful to remark, that although the hog 
harbors a large number of intestinal parasites, up to the present, 
according to Neumann, no adult form of' cestode has been ob¬ 
served in it. 
When we come to the dog, however, it is said of him that 
he is the favorite host of tape worms; eight species being put 
down as his share, and of which the greater number of the cystic 
forms are known. The taenia serrata has its cystic form in the 
cysticercus pisiformis, frequently found in the peritoneal cavity 
of hares, and also domestic, or wild rabits. The taenia margin- 
ata, whose cystic form is the cysticercus tenuicollis, found in the 
peritoneal, and occasionally in the pleural cavity, moie especi¬ 
ally of domestic ruminants. The taenia echinococcus, cystic 
form the echinonococcus veterinorum, found in most of the or¬ 
gans of the herbivora, and even in man, but more frequently 
observed in the liver and lungs of ruminants, and the hog. The 
