The ectozoa of ruminants have received much attention, but I can merely indicate the known forms.
It conveniently stands thus, moreover, in direct contradiction to the term ectozoa.
In reference to the ectozoa of rodents it may be said that they are very numerous.
The ectozoa of the dog, though not numerous as species, are of importance in relation to mange.
The ectozoa of birds are too numerous to be dealt with in these pages.
In like manner a great deal has been written respecting the ectozoa of fishes.
ectozoon ec·to·zo·on (ěk'tə-zō'ŏn')
n. pl. ec·to·zo·a (-zō'ə)
An animal parasite, such as a flea or louse, living on the exterior of the host organism.