pee ay Ae 
vestibulum, chitinous, with a great number 
of cells in front of the horn, which is rela- 
tively small, 0,385 mm. with very muscular 
walls and internally but slightly chitinons 
layer. Uterus double, circumvolutions exten- 
ding from the bulb to beyond the anus. Ova 
elliptical with exceedingly slender shell, and 
with the embryo completely formed when 
laid: length 0,048 mm., width 0,038 mm. 
Development: Unknown. 
Habitat: Intestine and caecum of 
Coccyzus melanocaryphus Vieill. 
Coccyzus minor Gm. 
Diplopterus naevius L. 
Piaya cayana L. 
Guira-guira Gm. 
Source: We obtained our material from 
the intestine of a guira-guira (Gm) in Man- 
guinhos (Rio de Janeiro). 
Material: From the Helminthological col- 
lection ‘of the Instituto Oswaldo Cruz; no. 
1085. 
Note 1. Under the denomination Ascaris forcipata 
Rudolphi describes various nematodes collected by Nat- 
terer in Brazil, in the intestines of birds belonging to 
the difierent groups (Cuculus, Bucco aud Caprimulgus). 
Diesing in 1851 calls only the parasites of Bucco for- 
cipata, as he considered the worms of Cucculus and Ca- 
primulgus identical with Ascaris subulata Rud. which is 
a parasite of the European Caprimulgus. 
Schneider gives a series of European and American 
birds as hosts of the Heterakis forcipata and, though 
he finds it strange that in so many birds of different ge- 
nera there should be only one kind of parasite, with its 
own geographical distribution, he justifies his opinion 
from the fact that he did not find other varieties in the 
specimens he studied, but only a great difference in their 
dimensions. 
After Schneider, nearly all the authors who studied 
this species included in the rubric forcipata the worms 
inhabiting birds of quite different habits which live in 
quite definite ‘parts of the globe. 
We are of .opinion that it is more correct to separate 
the nematodes into different species according to the 
habits of their bird-hosts and their respective geogrephi- 
cal distribution. Thus we designate Subulura forcipata 
the intestinal parasite of the Brazilian Coccygiformes of 
which the characteristics are identical with the above 
written diagnosis. 
Note 2. We gather from the descriptions by Schnei- 
der of Heterakis forcipata, that he described specimeus 
of Subulura suctoria, found in Caprimulgus. 
4. Subulura strongylina (Rudolphi, 1819) 
Railliet & Henry 1912. (1 & 2) 
PI. II fig. 6: Pl. IV fig. 2: PI. XI figs. 3 & 4. 
Dimensions: 
3 Length: 4,36 to 12 mm. width: 0,308 
© Length: 5,6 to 18,7 mm. width: 0,411 
mm. at the level of the vulva. 
Body white, filiform, shatpened at the ex- 
tremities : cephalic part inclining towards the 
dorsal surface, as well in the male as in the 
female: caudal segment straight in the fema- 
Je, slightly ventrally curved inthe male. Very 
slender cuticle, transversally striated, the striae 
being 0,0019 mm. distant one from the 
other. Lateral cephalic expansions well de- 
veloped, stretching from the buccal orifice 
to the middle partof the bulb, striped trans- 
versally with numerous striae close together, 
with five or six very long longitudinal stri- 
ae; length 1,367 mm. width 0,065 mm. Nerve 
collar situated between the cephalic ex- 
tremity and the excretory pore. Excretory 
pore opening in the middle part of the oeso- 
phagus. Mouth in the form of an irregular 
hexagon, with badly defined lips, surrounded 
by six small papillae, disposed in two late- 
ral rows of three, of which the middle ones 
are the largest. Buccal cavity cylindro — coni- 
cal, narrow in the beginning and widening 
out at the back where it is twice as 
large as at the opening; thick inner layer of 
chitin; depth: 0,048 mm. Three almost rectan- 
Note (1) The dimensions of the specimens obtained 
from the intestine of Crypturus sp. are somewhat varia- 
ble a fact, which led us to believe that might possibly be 
a two distinct species. However, a lenghty examination 
of the material revealed an identical arrangement of 
the genital papillae, and the same length and shape of the 
spicules in the males ; in the females : the same aspect 
of the vulva and, unchanging morphology of the ovijec- 
tor and so weconclude that there is only one species 
which we identify with Subulura strongylina. Rud. As to 
the females, some are perfectly developed, and others 
not pregnant, although in a state of complete evolu- 
tion, the vulva and different parts of the ovijector being 
distinctly visible. 
Note (2) Perhaps the parasite of Odontophorus ca- 
pueira (Spix) is not Subulura strongylina, as this host 
belongs to the order Gallinae; Crypturus belongs to the 
order Crypturi. 
