IS có 
vity cylindro-conical, shallow (0,042 mm), 
well-protected by strong chitinous pla- 
tes, containing three lanceolate teeth. Oeso- 
phagus rectilinear, the posterior part being 
club-shaped with muscular walls communi- 
cating with the intestine by means of a sphe- 
rical bulb which contains three stong chiti- 
nous plates. Intestinal tube rectilinear, initial 
portion dilated. 
Male: Nerve collar 0,254 mm. from an- 
terior extremity. Excretory pore 0,381 from 
same. Oesophagus: 1028 mm. long. Bulb, 
0,231 mm. in diameter. Sucker small, shallow, 
ellipsoid, 0,385 mm. long, 0,508 mm. from 
caudal extremity. Genital expansions only 
siightly developed. Eleven pairs of papillae: 
three ventral, pre-anal, voluminous; one by 
the side of the middle third of the border 
of sucker, one just above the anus; another 
a little above the later, two ad-anal large 
ones: one lateral, one ventral below the 
last-mentioned ; six post-anal: two large ven- 
tral ones near the anus: two smaller ones 
also ventral, near the tail end, one large late- 
ral, one between these last-mentioned; one 
very small one atthe root of the lateral one. 
Spicules two, equal strongly chitinised, the 
proxinial extremity dilated and the distal end 
very sharp; length 1,710 mm. Curvilinear ac- 
cessory piece 0,211 mm. large. Anus, 0,127 
mm. from tail end. 
Female: Nerve collar 0,254 mm. from 
head. Excretory pore 423 mm. from head. 
Oesophagus 1,156 mm. long. Bulb’s diame- 
ter 0,254. Vulva cleft-like, not prominent, 
opening a little above the middle of body; ovi- 
jector 0,771 mm. long, starting from vulva, 
bent towards the cephalic extremity. Vesti- 
bulum 0,406 mm. in size, corresponds to 
half the total length of ovijector, and ori- 
ginal in shape, (fig. 1); its lumen lined by 
thick layer of chitin, with thin and muscular 
walls. Sphincter very short, measuring 0,169 
mm. Horn very short, with well developed 
muscular layer the thickness of which dimi- 
nishes rapidly in the pre-uterine segment, 
continuing with the thin epithelium of the 
uteri: length 0,296 mm. Uteri, dichotomized | 
the diverging uterine circumvolutions reaching 
the first partof the intestine, and rarely pas- 
sing the anus. Ovaries in opposite directions 
in front of the vulva. Eggs elliptical, with 
thin smooth shells, containing embryos when 
ripe and having the following dimensions: 
0,077 mm. and 0,058 mm. in diameter. Anus 
0,493 mm. from posterior extremity. 
Life History: unknown. 
Habitot: intestine of: 
Malcoptila torquata (Ham. u. Kuest.) 
Chelidoptera tenebrosa (Pall). 
Nonnula rubecula (Spix)- 
Monacha nigra (Mueller). 
Monacha morpheus (Hahn. u. Kuest.) 
Bucco coltaris (Lath). 
Bucco macrorhyncus (Gm). 
Bucco tectus (Bodd). 
Bucco tamatia (Gm). 
Bucco striolatus (Pelz). 
Bucco rufiventris (Natt). 
Bucco swainsoni (Gray & Mitsch). 
Bucco chacuru (Vieill). 
From Rio de Janeiro (Angra dos Reis) 
&, Minas Geraes (Lassance). 
Material: Helminthological collection of 
the Instituto Oswaldo Cruz, nos. 1071 to 
1075. (1) 
34. Subulura lutzi Barreto, 1918. 
(Plate XVII, figs. 1 to 4.) 
Dimensions; 
3 Length: 14 mm.; width: 0,37 mm. 
2 Length: 14 to 22,5 mm.; width: 0,46 
mm. at the height of vulva. 
Body, white, rectilinear, filiform, with ta- 
pering and curved extremities, in opposite 
directioris in the male. Cuticule fine transver- 
sally striated, the striations 0,024 mm. 
one from the other. The anterior part of 
body cone-like, with truncated apex, curved 
Note 1. We attribute the differences we noticed, 
to the poor state of the material from Bucco swainsoni 
noticeable when compared with that from B. chacuru. 
The general aspect of the tail in males and the position 
of certain genital papillae, is not the same in the speci- 
mens from these two hosts. The only way to decide fi- 
nally whether the parasites harboured by these Bucconi- 
dae are tie same would be to obtain well preserved 
specimens from Bucco swainsoni. 
