Hosts: Domestic goose, baby chick (experimental).
Morphology: The body is oval, 6 to 9 by 3.5 to 6.5 u with a mean of 8 by 5 u. Four anterior flagella appear to arise in pairs from 2 blepharoplasts. The undulating membrane extends almost the full length of the body. A free trailing flagellum and a costa are present. The axostyle is broad and hyaline, extending a considerable distance beyond the body. There is no chromatic ring at its point of emergence from the body. The nucleus is characteristic, completely filled with minute chromatin granules and also with a single large karyosome usually at one side. The cytostome is prominent. Many specimens have large bacteria in the endoplasm.
Geographic Distribution: United States (Maryland).
Remarks: Hegner (1929) found a very few of these trichomonads in cecal material from a goose. He inoculated 3-day-old chicks with the material per os and per rectum and the above description is based on material from the chicks.
Synonym: Tetratrichomonas anatis.
Host: Domestic duck.
Location: Posterior part of intestinal tract.
Geographic Distribution: Europe (Hungary).
Morphology: The body is broadly beet-shaped, 13 to 27 by 8 to 18 u, with 4 anterior flagella, an undulating membrane extending most of the length of the body, a free trailing flagellum, a costa and a fibrillar axostyle.