LAN: SARTRE 
ticle; this formation is surrounded by radia- 
ting muscles and is 0,6 mm. in front of 
cloaca. Pedunculated genital papillae ten 
pairs in number: four pre-anal and six 
post-anal; the third and fourth pairs on the 
outisde, the tenth by the side of sucker. 
Clearly apparent caudal glands opening just 
behind the second and in front of the third 
pair of papillae. Spicules two, unequal the 
tight-hand one strongly chitinised, clearly 
seen, longish (0,600 mm.) dilated in the free 
part: the left-hand smaller, (0,440 mm.) weak- 
ly chitinised, hardly visible. Gubernaculum 
spoon-shaped, narrow; greatest width: 0,038 
with strong chitinised layer, clearly seen 
turned transversally 0,180 mm. long. 
Female: Buccal cavity 0,060 mm. in depth. 
Excretory pore 0,610 mm. from cephalic ex- 
tremity. Oesophagus equal to 1/12,5 of body, 
1,8 mm. in size. Bulb 0,250 mm. Tail drawn 
out ending in an appendix, 0,15 mm. long, i. 
e. one twelfth of body. Pores of the caudal 
glands situated in the posterior third of tail. 
Vulva prominent, opening immediately behind 
anterior third of body. Ovijector bent for- 
wards, parallel with body, 1 mm. long. Ovi- 
jector shows a short vestibulum, remarkable 
for the thickness of its muscular walls com- 
posed of many layers of cells and considera- 
ble internal cuticular clothing, continuing the 
external cuticle of the nematode worm, In 
the muscular wall of the organ are to be 
seen four unicelled glands, one ventral and 
three dorsal, with distinct nucleus and nucle- 
olus and opaque and granulated protoplasma- 
The sphincter is composed of three parts: the 
initial part which forms an obtuse angle with 
the vestibulum and is thickly covered with 
cuticle, blocking the lumen of the passage so 
that the eggs passing through come in 
contact with its walls; the muscular layer is 
thinner than that of the vestibulum and yet 
it has three or four layers of cells and 
two uni-celled glands like those of the ves- 
tibulum; the middle region which is charac- 
terised by the existence of an organ which 
gets intensely coloured by picro-carmine and 
consists of seven or eight long cells, arranged 
transversally between the muscular tunic whi- 
ch is reduced to two layers of cells) and the in- 
ternal clothing which is very thin. The terminal 
region of the sphincter is characterised by the 
gradual reduction of the external muscular 
covering. At the passage of the sphincter, 
the horn is indicated by the presence of high 
and broad cells with nucleus and nucleoli 
which are. Very distinct the musculo-epithel- 
lial horn consists of along (10 mm.) narrow 
tube, which after going forwards for a short 
distance, bends and curves backwards; it holds 
a small quantity of eggs arranged all along it» 
it bi-furcates aud re-unites itself to uteri. Uteri 
narrow (0,120—0,130 mm.) long (the anteri- 
or measures 27,5 mm.) (the posterior 30,5 
mm.), coiled several times round the intestine: 
each branch holds about 1,02 eggs, of which 
those in the distal region have no shell, be- 
ing wrapped up in the vitelline membrane. 
The larger of these branches holds 700 eggs 
arranged in three rows one against the 
other; the organ narrowing down the eggs 
200 in number are arranged in two rows in 
front about 60 are arranged in one diame. 
trical row: finally the proximal region con- 
nected with the horn holds 30 eggs arranged 
in one plane according to the axis. 
show the same position which they get in 
the horn. The distal region of the uteri con- 
tain spermatozoids it is not however indivi- 
dualised as a distinct seminal receptacle. Ovi- 
ducts narrow and short (0,600 mm). Ovaries 
club-shaped, 4,5 mm. long, divergent, one 
in front and one behind the vulva, remarkable 
for their blackish colour, due to the reserve 
material they contain. Eggs almost round, 
thin-shelled, smooth, hatched, 0,063 mm. long 
and 0,058 mm. wide. 
Habitat: intestine of Vulpes (V) vulpes 
var atlantica WAGNER. 
Geographical distribution: Africa (Algeria 
Blida). 
Hosts of the Nematodes of the sub-fa- 
mily SUBULURINAE. 
In the following list of the animals hosts 
of the nematodes ofthis sub-family, the birds 
and reptiles bear the names according to 
