——- 21 
gular teeth at the entrance of the oesopha- 
gus, at the back of the buccal cavity, 0,019 
mm. long. Oesophagus rectilinear, with pear- 
Shaped expansion at the juxta-bulbous ex- 
tremity; as to stucture it may be said to 
be divided into three parts: the first mea- 
suring about 0,076 mm. is but slightly 
muscular and its lumen is barely covered 
with chitin; the second is larger mea- 
suring 9,456 mm. and is more muscular and 
more thickly covered with chitin: the third 
about 0,532 large, has very muscular walls 
and forms the terminal expansion of the 
organ. Length of oesophagus: 1,040 mm. Sphe- 
roid bulb immediately after the oesophagus 
0,205 in diameter, with three laminae for- 
ming an insosceles triangle inside. Intestine 
dilated in the juxta-bulbous section, entirely 
straight, ending in a short rectum with sle- 
ghtly thick wall. 
Male: Excretory pore 0,465 mm. from 
the anterior limit of the body. Tail conical, 
slightly curved towards the ventral surface, 
with a straight, chitinous appendix measu- 
ring 0,102 mm. Sucker spindle-shaped, without 
chitinous rim; antero-posterior diameter 0,169 
mm; posterior extremity 0,450 mm. from cau- 
dal extremity Genital expansions rudimen- 
tary. Eleven pairs of papillae distributed as 
follows: three preanal, ventral, equal and large 
ones: one at the side of the sucker, at the 
junction of the higher third and the lower 
two-thirds of this organ, one immediately 
above the anus, one equally distant from the 
lower iimit of the sucker and of the cloacal 
orifice; two adanal equal ones: one lateral, the 
other ventral; six post-anal: of these four are 
ventral and two lateral; of the ventral ones 
two are larger, equi-distant and nearer 
to the anus, two lesser and situated near 
the posterior extremity of the lateral ones, 
one is large and at a level with the third 
post-anal ventral one, counting from the anus, 
the other is very small and between the 
third and fourth ventral ones. Spicules two, 
alike and extremely chitinous; with curved 
distal extremity; slightly sinuous with very 
sharp point, accompanied by an almost 
straight gubernaculum: length of spicules 
1,180 mm ; length of gubernaculum 0,169 mm. 
Anus 0,186 mm. from posterior extremity. 
Female: Excretory pore 0,186 mm. from 
the cephalic extremity; tail straight aculate 
ending in a chitinous formation 0,102 mm. 
long. Vulva small, only very slightly prominent 
above the middle of the body. Oviduct, 0,950 
mm. long, turned towards the cephalic extre- 
mity, its vestibulum sinuous, neck forming 
an acute angle with the ventral surface of 
the body; sphincter small. Horn of uterus 
equal to 2/3 of oviduct, muscular, turned sud- 
denly towards the caudal extremity, seeming 
hook-like; afterwards it fuses with the ute- 
rus, Uterus bi-lateral with diverging ramifica- 
tions; circumvolutions reaching to the first 
part of the intestine and to the anus. Eggs, 
elliptic, with thin shell, with embryo when 
laid; length 0,084 mm. width: 0.067. Anus 
1,053 mm. from posterior extremity. 
Development: Unknown. 
Habitat: Intestine of 
Crypturus tataupa Temm. 
Crypturus sp. 
Tinamus sp. 
Odonthophorus capueira Spix. 
We studied material from Crypturus sp. 
Source: Rio de Janeiro (Merity). 
Material: Fromthe helminthological Col- 
lection of the Instituto Oswaldo Cruz, nos. 
1080 and 1082. 
5. Subulura reclinata (Rudolphi 1879) 
Barreto, 1917. 
(PL 11 fig. 6). 
Dimensions: 
d Length: 11. mm.: width 0,359 mm. 
Q Length: 14.30 to 30,5 width: 0,514 
mm. at the height of the vulva. ; 
Body threadlike. white, with pointed ex- 
tremities: the front part slightly dorsally de- 
viated: the posterior one generally rectilinear 
in female, spirally curved in male. Cuticle thick, 
aparently in two zones, the inner one anhis- 
tous, smooth, the external one transversally 
striated, the striae 0,0021 mm. one from the 
other. Lateral cephalic expansions developed 
