
which are never found in Chilomitus lagos- 
tomi. 
Eutrichomastix saurii FONSECA, 1917. 
Brazil-Medico, vol. 31 n. 36 pp. 304-5. 
Synonym: Trichomastix saurii FONSECA 
1917 1. c. 
This flagellate, which I described as a 
parasite of a species of Amphisbaena, was 
first put in the genus 7richomastix BLOCH- 
MANN 1884. When it was found that this 
name already belonged to a group of Hyme- 
noptera, it was changed to Eutrichomastix 
KOFOID et SWEZY, obliging me to follow 
the change. 
Redescription: Body elongate, generally 
pear-shaped; anterior extremity rounded, 
blunt, much broader than the posterior end; 
the latter sharpened so as to end in a 
fine point which generally coincides withthe 
pointed end of the axostyle. 
Protoplasm not clearly divided in endo 
and ectoplasm, the latter like in the other 
species of this genus, is only formed of a 
narrow periplastic layer, which is flexible 
and allows free metamorphic movements; 
endoplasm finely alveolar, generally devoid 
of inclusions. 
Axostyle very visible, hollow, and 
tube like; it begins at the anterior extremity 
of the body and traverses it entirely, its last 
fourth emerges at the posterior end and 
forms a slender and sharp needle outside 
the body. I saw no siderophilous granula- 
tions inside it. Itis generally as long as the 
flagellate to which it belongs and about 1 y 
wide. Cytostome difficult to distinguish as 
the body is very small. 
Nucleus round, anterior, sub marginal, 
about 4 y in diameter, It has a generally 
small caryosome, which often looks like a 
sidrophilous granulation surrounded by a 
clear halo. Often it is connected with the 
blepharoplast by a slender chromophilous 
filament, the rhizoplast. The blepharoplast is 
anterior, almost marginal and from it start 
three anterior and one recurrent flagella. 
The posterior one is much longer than the 

57 ——— 
body, the others are shorter; they are all 
free. 
Length 6—12 u; Width 3—6. 
Trichomonas Chagasi HASSELMANN & 
FONSECA, 1918. 
Brazil-Medico, vol. 32, n. 25, p. 193. 
The study of this flagellate was first 
undertaken by Dr. CARLOS CHAGAS; as 
however he had no leisure to carry it out, 
he presented Dr. HASSELMANN and me 
with the material, requesting us to finish it, 
We published the results in Brazil-Medico. 
Redescription: Body very metamorphic, 
generally oval or round; protoplasm not 
clearly divided in ecto and endoplasm; the 
former composed of a narrow periplastic 
layer, enabling the body to undergo great 
changes of outline. At the anterior end of 
most stained specimens, the cytostome is 
clearly seen; it has no chromophilous lip 
and looks like a wedge-shaped bent fissure, 
as it is very long it crosses the anterior 
third, sometimes even half of the cell, 
When unstained, the axostyle is readily 
seen; after staining it is less easily noticed; 
it has the shape of a long slender, bent rod 
that crosses more than the two posterior thirds 
of the body and stands out at the hind end; 
it is hollow and contains no siderophilous 
granulations, like those seen in other spe- 
cies, but there are always two rows of these 
granulat ions, on either side; sometimes 
they look like chromophilous lines limiting 
the axostyle. ; 
The oval nucleus is generally clearly 
separated from the rest of the cell, though 
the presence of a nuclear membrane can 
not be discerned. Sometimes there is a 
larger granulation in the center of the 
nucleus, but as arule, they are all more or. 
less of the same size and irregularily distri- 
buted in the nuclear area. The nucleus is 
anterior, in front of the cytostome, between 
this, the anterior end of the axostyle and 
the chromophilous rib of the undulating 
membrane. 
In front of the nucleus, there is a some- 
