AAA 5 teen 
Enteromonas hominis FONSECA, 1915. 
Redescription : Body almost always regu- 
larily spheric; posterior extremity sometimes 
sharpened into a very short tail. 
Diameter: 5—6 micra. 
Periplast making up the whole ecto- 
plasm, narrow, but rigid enough to prevent 
metamorphic movements. Endoplasm alveo- 
lar, often containing inclusions, freauently 
bacteria; alveolae often regularily disposed; 
when this is the case, stained specimens have 
a central one, surrounded bya circle others. 
Neither axostyle nor cytostome. 
Nucleus anterior, submarginal, sometimes 
central, often spheric, 1 u in diameter. It 
is of the protokaryon type, that is with caryo- 
some, empty clear zone and no membrane. 
Caryosome central, large and spheric, sel- 
dom irregular, or small. Clear zone very 
narrow, empty. No centriole was seen. 
Three flagella, one recurrent and longer 
than the body, the others anterior and shor- 
ter. They start from the only blepharoplast 
which is very small, sub-marginal and ante- 
rior to the nucleus, to which it is attached 
by a rhizoplast. This s>ecies multiplies by 
longitudinal division In the first phases 
there appear two chromatic plates, which 
seem to have distinct chromosomes; at this 
stage two blepharoplasts are seen; they give 
rise to two sets of flagella; often a centrodes- 
mosis, which may be rather thick is seen bet- 
ween the plates; there are large forms with 
many irregularly disposed flagella. CHAGAS 
and HARTMANNS theory on the degene- 
rative dissociation of the fibrillae constituting 
the axial filament of the flagella may help 
to interpret them. 
Habitat: Intestine of Homo supiens. 
I found this species in faeces, expelled 
Jess than five minutes before examination, 
by a patient from the “Hospital dos Aliena- 
dos”, who had disentry of unknown origin, 
She had been treated, without any result, 
with sulfate of sodium, Dovers powders, calo- 
mel, electrargol and injections of camphora- 
ted oil. After 12 days illness, the patient 
died. Her chief symptoms were: prostration, 

painful evacuations, haemorrhagic faeces, 
coated tongue, tympanic and painful abdo- 
men. On the first days there was a slight 
hyperthermia (maximum 370, 6 C.); on the 
following days the temperature rose to 380 
and 390 C. in the evening, being 370,6 C. 
in the morning; on the two last days it fell 
to 360 C., remaining stable. The first exanii- 
nation of faeces was made on the eve of 
the day of death; it was too late to make a 
bacteriologic examination so as to ascertain 
the etyologic role of the flagellate. 
Enteromonas intestinalis FONSECA, 
1918. 
Brazil-Medico, vol. 32, n. 40, pp. 313-14. 
Descrivtion: Body sub-spheric, anteriorly 
truncate in most specimens; without any 
trace of a tail. 
_ À very narrow rigid, periplastic layer 
prevents all metamorphic movements ; there is 
no otherectoplasm; endoplasm alveolar with 
only a few inclusions; the alveolae are not 
regularily disposed as is so often the case 
with Enteromonas hominis. 1 saw no sign of 
axostyle or cytostome. 
Nucleus more or less central, at times 
somewhat anterior; in well differentiated 
preparations it often shows achromatic mass 
surrounded by a clear halo, that is, it looks 
something like a protocaryon. In other spe- 
cimens it seems composed of small granules 
which adhere to one another, 
There are three flagella, one of which 
is longer than the others and startsfrom the 
anterior pole, running backwards; the others 
are shorter and start from the same place, 
out are directed forwards, They all spring 
from a small blapharoplast, which is in front 
of the nucleus and sometimes seems attached 
to it by a rhizoplast. I saw no stages of di- 
vision and no kysts. 
Diameter: about 5 w. 
Habitat: coecum of Oryctolagus cunicu- 
lus L; (the tame rabbit.) 
Chilomastix Bittencourti FONSECA 1915. 
Redescription: Body elongate, oval, with 
less regular outline than in the other species 
a 
