Jateral rows. Buccal capsule small, cylindri- 
cal, the walls covered with strong chitinous 
plates. Three blunt, subquadrangular teeth, 
0,020 mm. Jong, are found at the base of the 
capsule. Oesophagus rectilinear, club-shaped 
at posterior extremity; the walls not very 
thick in the anterior part, become more mus- 
cular in the posterior part; oesophagean canal 
spacious and weakly chitinised in nearly all 
its length; the chitinous layer becoming 
thicker in the last third; length: 1,495 mm. 
Bulb spheroid, with medium diameter of 0,190 
mm.; with three subtriangular, chitinous pla- 
tes. Initial segment of intestine dilated, di- 
rectly connected with the bulb in the shape- 
de of a winding tube, the termina! part be- 
ing differentiated in a small rectum with 
sight walls. 
Male: Excretory pore opens 0,604 mm. 
from cephalic extremity. Depth of buccal 
capsule 0,038 mm. Posterior extremity stron- 
gly curved towards ventral surface, ending in 
a rectilinear appendix, measuring 0.093 mm. 
Sucker elliptical, without chitinous formation, 
its antero-posterior diameter equal to 0,280 mm. 
the lower limit is 0,883 mm. from caudal ex- 
tremity. Caudal expansions very much atro- 
phied. Eleven pairs of papillae thus arran- 
ged: three voluminous preanal ones: one at 
the level of the higher third of sucker, one 
equally distant from the anus and the lower 
rim of sucker, one at the cloacal orifice; 
two large ad-anal ones, one lateral, the other 
ventral; six post-anal: four ventral, of which 
three are larger than the others and equi- 
distant, the lesser one being near the poste- 
rior extremity ; two lateral ones, a large one 
at the height of the third ventral papillae 
another small one between the two last post- 
ana) ones. Spicules two, unequal, with taper- 
ing point, the lesser one behind, about 4,5 
of the greater one; length: larger one 1,524 
mm.; lesser one 1,054 mm. Accessory piece, 
slightly ventrally curved, the outer extremi- 
ty is sharp-pointed and the inner one more 
dilated; length: 0,169 mm. Anus 0,254 from 
caudal extremity. 
Female: Excretory pore 0,651 mm. from 
anterior extremity tail sharp-pointed slightly 
41 
bent towards ventral surface followed by 
appendix 9,140 mm. Vulva opening above 
the middle of body, prominent. Ovijector 
comparatively large (0,899 mm.) from the 
vulva, Opening towards the cephalic extre- 
mity. Vestibulum ampulliform with the neck 
turned at right angle; lumen covered with a 
strong layer of chitin 0,334 mm. Sphincter 
small. Horn 0,541 mm. long, with very muscu- 
lar thick walls, which gradually diminish in 
thickness, until they are as thin as the ute- 
rine walls with which they continue. Uterus 
duplex, with diverging branches and hooklets, 
reaching to the first part of intestine and 
traversing the general cavity till beyond the 
anal orifice. Eggs ellipsoid, very thin-shelled, 
containing embryos when emitted; length: 
0,083 mm width: 0,049 mm. Anus 0,156mm. 
from posterior extremity. 
Life History: unknown. 
Habitat: intestine of Trogon 
Trogon variegatus Spix. 
Came from: S. Paulo (Baurú). Ceará 
(Museu Rocha). 
Material : Helminthological Collection of 
the Instituto Oswaldo Cruz nos. 1078 and 
1079. 
sp. and 
37. Subulura carlosi Barreto 1918. 
(Plate XIX figs. 1, 2 3 and 4). 
Dimensions : 
d Length: 9to 10 mm. width: 0,29 mm. 
Q Length: 10 to 15 mm. width :0,35 mm. 
Body yellowish white, filiform, anterior 
part almost rectilinear or slightly bent to- 
wards dorsal surface, posterior part straight 
in the female, strongly curved in the male, en- 
ding in a sharp-pointed appendix. Cuticle fine, 
delicately transversally striated, striations 
0,0021 mm. distant from each other. In both 
sexes are found lateral cephalic small expan- 
sions, dwindling away at the level of the pos- 
terior extremity of oesophagus, their length 
is 0,93 mm. and width 0,051. Nerve collar 
at anterior third of oesophagus. Excretory 
pore opening on ventral surface, very near 
the nerve collar, between the latter and the 
posterior extremity of oesophagus. Mouth 
with small lips not clearlv seen and six smali 
