“…In particular, very large, though otherwise characteristic, trichomonads have sometimes been seen (Powell, 1936;Bland et al, 1932;Pattyson, 1937) and it is not certain whether or not these are morphological variants of a single species. In particular, very large, though otherwise characteristic, trichomonads have sometimes been seen (Powell, 1936;Bland et al, 1932;Pattyson, 1937) and it is not certain whether or not these are morphological variants of a single species.…”