40 
Philippine Journal of Science 
1920 
this organism in the genus Eutrichomastix. This genus has 
been defined by Chalmers and Pekkola(6) as follows: 
Eutrichomastix Kofoid and Swezy 1915. 
Parasitic Tetramitidae with an axostyle and a cytostome, without thick- 
ened lips and with three anterior and one free trailing flagellum, but 
without an undulating membrane or contractile vacuole. Tyne species: 
Eutrichomastix lacertae (Blochmann 1884), found in the intestine of La- 
certa agilis. 
Chatter jee, in describing the organism seen by him, says that 
in some individuals “a small dark line is seen originating from 
the nucleus and ending in the posterior end.” However, he 
states that neither cytostome nor any axostyle-like organ could 
be made out, and speaks of the rather close resemblance be- 
tween his organism and Aragao’s Copromastix prowazeki.i^) 
Chatter jee’s parasite was found in the stool of a dysenteric 
patient. No amoebae were found in the stool. Our patient, a 
girl aged 10 years, was suffering from a mild ileocolitis from 
which she recovered. Her stools were fluid, feculent, and con- 
tained necrotic cell debris, . cast-off epithelium, and erythro- 
cytes. Other parasites present were “Blastocystis,” Trichuris, 
Ascaris, and hookworm. Abdominal symptoms exhibited before 
the onset of the ileocolitis are probably attributable to the other 
parasites present. 
In discussing the genus Trichomastix, in which Chatter jee, 
following Parisi, placed his organism in 1917, Chalmers and 
Pekkola, v/riting in 1918, point out that the name was pre- 
empted in 1878 by Vollenhoven for the hymenopteron Tricho- 
mar.tix polita, which, of course, supersedes Blochmann’s desig- 
nation for the protozoon in 1884. Raillet altered the spelling to 
“Trichomastyx” in 1893; but Chalmers and Pekkola consider the 
alteration insufficient, so they adopt the generic name Eutri- 
chomastix proposed by Kofoid and Swezy in 1915,(36) though 
expressing a preference for their own name Axomastix as es- 
tablishing a greater distinction between the hymenopteron and 
the protozoon. 
Chilomastix mesnili. — Under the generic names Tetramitus 
and Macrostoma, this parasite has been reported several times 
in the Philippines. Apparently it does not occur with great 
frequence. Three cases v/ere found in our series. In one the 
diagnosis was made from the free-swimming trophozoites, and 
in the other two the diagnosis was made by discovering the 
encysted forms on the stained preparations. It never occurred 
as an exclusive parasite. Its earliest appearance was between 
the second and third years. 
