a ART EEE 
© Length: 18,9 mm. to 21 mm. (Rud.) 
12 mm. Seurat; Width: 31 mm 
(Seurat). 
Body slenderer at the extremities, espe- 
cially at posterior one. Head bare, or with 
lateral expansions: lips small and indistinct. 
Male: Tail very much curved. ending in 
a long fine point. Caudal expansions, very 
small or wanting. Sucker elliptic, elongate. 
Ten pairs of papillae, the first three united 
by a small cuticular expansion; three in the 
cloacal region; the tenth near the sucker. 
Spicules two, unequal, long and filiform with 
short point, measuring respectively 1,2 and 
1,6 mm. Gubernaculum triangular, 0,11 mm. 
long. Anus 0,22 mm. from caudal extremity. 
Female: Tail straight, conical, sharp- 
pointed 1/16 of the body. Oesophagus with 
bulb 1/8 of total length. Vulva slightly pro- 
minent, distinct, opening in front of the body 
4,3 mm. from cephalic end. Oviduct remark- 
able on account of short sphincter which 
adheres to the vestibulum for nearly the 
whole of its length. Ova rounded, with em- 
bryo, longitudinal diameter 0,085 mm.; trans- 
versal diameter 0,056 mm. 
Habitat: Intestine of 
Caprimulgus ruficolis Temm. 
Caprimulgus europeus L. 
Caprimulgus sp. Engoulevent. 
Geographic distribution: Spain (Algeci- 
ras), Corsica. 
3. Subulura forcipata (Rudolphi, 1819) 
Railliet & Henry, 1913. 
Plate XIV, figs. 1 & 2. 
Dimensions: 
S Length: 820 mm; width: 0,282 mm. 
9 Length: 13,6 mm.; width: 0,306 mm. 
measured at the height of the 
vulva. 
Body, spindleshaped, yellowish white; 
the fore part spirally rolled towards the back 
Caudal part straight or turned ventrally in 
the female; in the male sometimes dorsally, 
at others ventrally. Cuticle very thin, trans- 
versally striated, the striae 0036 mm one 
from. the other. Lateral expansions small, 
wide, reaching the posterior limit of the bulb, 
0,710 mm. long, nearly 0,074 mm. wide. Ex- 
cretory pore a little beyond the nerve collars. 
Mouth with indistinct lips, with small papi 
lae, placed laterally in two series, each with 
three papillae. Buccal cavity rather small, cy- 
lindro-conical, walls covered by a chitinous 
layer. Teeth, three, at the entrance of the 
oesophagus, lance-shaped, 0,030 mm. long. 
Oesophagus, with pear-shaped dilatation at 
the posterior extremity, the walls at first thin 
then thickening gradually until the terminal 
region; length 1,028 mm. Bulb spheroid, im- 
mediately behind the oesophagus; aproximate 
diameter 0,170 mm. Intestine dilated in the 
juxta-bulbous region, the last segment dit 
ferentiated into a very short rectum. 
Male: Tail funnel-shaped, curved now dor- 
sally, now ventrally. Sucker small, elliptic, 
slightly prominent, ring without chitin; antero 
posterior diameter 0,177 mm; in 0,592 dis- 
tance from caudal extremity. Caudal expan- 
sions rudimentary. Ten pairs of papillae thits 
distributed: Three pre-anal, equal, ventral 
rather small, one on the level of the median 
part of sucker, one at the height of half the 
distance between sucker and anus, one at 
orifice and anus; two adanal, lateral, equal to 
foregoing; five post-anal, four of which are 
ventral that is, two large ones near the anus 
and two smailer ones near the caudal ex- 
tremity; one lateral one between the two 
last mentioned groups. Spicules equal, slen- 
der, slightly curved, with sharp distal hook- 
like strongly curved extremity; length 0,677 
mm. Straight gubernaculum extension 0,118. 
Anus 0,211 from caudal extremity. 
Female: Posterior extremity sharp-poin- 
ted, at times rectilinear, at other times turned 
towards the ventral surface. Vulva small, 
slightly prominent, situated above the middle 
part of the body 5,654 mm. from the cephalic 
end. Oviduct short (1,285 mm, inclined to 
wards the head of the nematode from the 
vulva onwards; vestibulum pear-shaped, with 
strongly chitinous lumen; neck inclined in 
obtuse angle towards the ventral surface 
0,504 mm. long.; sphincter the same size as 
