part of oesophagus. Mouth with indistinct 
lips and small cephalic, equal papillae. Buc- 
cal cavity regularly cylindrical in anterior part, 
of which the walls are protected by thick 
chitinous plates, more dilated in the poste- 
rior segment where are to be found three 
teeth in from of an equiteral triangle. Oesopha- 
gus; rectilinear, club-shaped more dilated at 
posterior extremity, followed by sub-spherical | 
bulb. Intestine dilated in the first part. 
Male: Buccal cavity: 0,041 mm. long: 
0,022 mm. wide. Oesophagus: 0,925 mm. 
in length. Bulb: antero-posterior diameter 
0,231 mm; transversal diameter: 0,205 mm. 
Sucker ellipsoid, without chitinous ring, sur- 
rounded by radiating muscles, measuring 0169 
mm. and with posterior limit 0,508 mm from 
tail end. Caudal expansions rudimentary. Ten 
pairs of papillae thus distributed: three pre- 
anal larger and ventral; cne by the side of 
sucker at the height of its middle part, one at 
the level of the junction of the anterior 1/3 
and the posterior 2/3 of the distance from 
sucker to anus; two ad-anal, large, lateral; five 
post-anal ones four ventral ones: two large 
ones at the cloacal orifice; two smaller ones 
near the tail end, one lateral, one between 
the ventral groups. Spicules equal and stron- 
gly chitinised; proximal extremity funnel- 
shaped, distal, sharp-pointed: length: 1,016; 
mm. width: 0,022 mm. Gubernaculum slight- 
ly curved, 0,101 mm. Anus opening in slight 
ridge 0,169 mm. from posterior extremity. 
Female: Buccal cavity 0,054 mm. deep 
and 0,029 mm. wide. Oesophagus: 1,105 mm 
long. Bulb: 0,257 mm. and 0,231 mm. in 
diameter. Excretory pore 0,456 mm. from ce- 
phalic end, Vulva not salient, opening in a 
slight depression of cuticle above the midle 
of body, 5,397 mm. from head. Ovijector 
0,677 mm. long, turned towards the anterior 
extremity; vestibule very long (0,338 mm.) 
with wide neck slightly curved, thin walls, 
and slightly chitinised lining. Horn muscular 
connected with vestibulum by small sphincter. 
Uterus double, uterine hooklets going round 
the intestine in its whole length but not pas- 
sing the rectum. Ova almost spheroid, with 
very thia shell, containing embryos when laid 
29 
0,059 mm. in diameter longitudinally and 
0,040 mm. transversally. Anus 0,771 mm from 
tail end. 
Deyelopment: unknown 
Habitat: intestine of 
Gallus domesticus L. 
Numida meleagris L. 
Francelinus bicalcaratus L. 
Geographical distribution: Cosmopolitan 
species: Europe: Italy (Pisa); Africa: Daho- 
mey, Guinea (Fouta-Djalon), Algeria (Algiers), 
Kiva: America: Brazil (Piauhy.) 
Material : From Gallus domesticus found 
in S. Raymundo, Piauhy; in the helmintholo- 
gical collection of the Instituto Oswaldo Cruz 
n. 1086. 
17. Subulura sarasinorum (Meyer, 1896) 
Railliet & Henry, 1913. 
(Plate VI. figs 1 to 9.) 
Dimensions : 
3 Length: 7,5 mm.; width; 0,046 to 0,52 
mm. 
9 Length: 10 to 11,24 mm.; 
0,57 to 0,7 mm. 
Body yellowsh-white. Cuticle smooth, 
ringless, finely striated transversally. Median 
lines normally developed, lateral lines more 
considerable. Polymiarian muscle cells ; mus- 
cular sections formed by fifteen elements. 
Ample lateral expansions, dwindling at the 
the posterior extremity of the oesophagus 
1,4 mm. in length, i. e. about 1/6 of the body 
and 0.08 mm. of the greatest width. Excre- 
tory pore opening near the cephalic extremi- 
ty, in median ventral line. Nerve collar situa- 
ted in anterior part of oesophagus, in fron- 
of excretory pore. Mouth almost circular, in 
central position, slightly ventral with four 
badly outlined teeth and four large papi'lae. 
width: 
| Buccal cnvity 0,057 mm. in length and 0,025 
mm. in width. Oesophagus sinuous, with 
thick muscular walls, and internal lining, 
strongly chitinous, with bulb in which are 
three chitinous plates; length of oesopha. 
gus 1,4 mm. or 1/6 of body. 
Male: Tail straight, sharp-pointed, begin- 
ning at anus. Caudal bursa regularly develop- 
ed, beginning at level of the rectum ; greatest 
