140 PROTOZOAN PARASITISM 



lishing infection of fowls with trichomonads from 

 seven different species of animals, raises the question 

 whether these may not be a single species and not 

 separate as now generally regarded. 



The same investigator (1928) by producing infec- 

 tion of the vagina of monkeys with monkey trichom- 

 onads of intestinal and vaginal origin, brings this ex- 

 perimental evidence in support of the morphological 

 resemblance between the parasites of these two loca- 

 tions, to which he and Ratcliffe ( 1927) had previously 

 referred. 



The present writer (1915) reported upon Trichom- 

 onas from the vagina and mouth of the same individ- 

 ual, which was morphologically and culturally the 

 same organism and was, therefore, designated as Tri- 

 chomofias vaginalis, that being the acceptable name 

 in that case. Later Ohira and Noguchi (1917) cul- 

 tivated the mouth trichomonad and, considering it 

 distinct from Trichomonas vaginalis, called it Tetra- 

 trichomonas hominis, a name not available since the 

 organism is identified as belonging to the genus Tri- 

 chomonas, which, with Trichomonas vaginalis as the 

 type species, has four flagella, not three as assumed 

 by these writers, and since the specific name hominis 

 was already applied to the species in the intestine. 



Goodey (1917), a bit later, named the mouth tri- 

 chomonad Tetratrichomonas buccalis, but since Tet- 

 ratrichomonas is a synonym to Trichomonas their 

 corrected name is Trichomonas buccalis. 



The writer (1922) called attention to Steinberg's 



