MAR Me | LABS 
width, 0,027 mm. (1/6 of the body) at 
the height of anus. Ten pairs of genital pa- 
pillae: four pre-anal and six post-anal, the 
later being the smaller. Two equal spicules, | 
2,5 mm. long and 0,016 mm. wide. Anus 
near posterior extremity, 25 mm. long. 
Female: Tail ending in slender point. 
Vulva circular, exactly above the middle of 
the body. Ovijector, very large, sinuous, cur- 
ved backwards’ with muscular layer formed 
by circular and longitudinal fibres, first smooth 
- afterwards irregular. Uterus continuing ovi- 
jector, divided into two branches reaching 
to oesophagus in front and anus behind. 
Eggs with comparatively thick shell, 0,081 
mm. in longitudinal and 0,065 mm. in tran- 
sversaly diameter, oval, containing embryos. 
Habitat: intestine of Loris gracilis Geoff. 
Geographical distribution: Asia, Southern 
and East India. 
18. Subulura (?) gracilis (Linstow, 1899) 
Railliet & Henry, 1913. 
Plate III figs. 1 & 8. 
Dimensions: 
d Length: 7,9 mm.; width: 0,3 mm. 
2 Length: 9,48 mm.; width 0,39 mm. 
Cephalic end furnished with two small 
papillae. Buccal cavity with strongly chiti- | 
nised walls. Oesophagus followed by bulb, | 
spherical with inside (?). Tail with long and 
sharp point in both sexes. 
Male: Oesophagus 1/8 of length of body. 
Tail 1/40. Spicules curved, 0,59 mm. in length, 
with strong border of orbicular muscles. Nine 
caudal papillae: three pre-anal and six post- 
anal, one pre-anal and one post-anal, lateral 
ones. 
Female: Oesophagus equal in length to 
1/9,3 of whole length. Tail 1/8. Vulva divi- 
ding the body in two in proportion the 11:13. 
Ova with embryos, 0,057 in length and 0,044 
in width. 
Habitat: intestine of Francolinus sp. 
Geographical distribution: Linstow’s ma- 
terial came from the Zoological garden in 
Berlin. 
19. Subulura acuticauda (Linstow, 1901) 
Railliet & Henry, 1913. 
Plate Ill fig. 7. 
Dimensions: 
3 Length: 10,5 mm.; width: 0,39 mm 
9 Length: 14,8 mm.; width: 0,51 mm. 
Cephalic extremity rounded. Oesopha- 
gus with bulb at end, corresponding in the 
male to 1/10,7, in the female to 1/12,5 of the 
whole length. Initial part of intestine dilated, 
posterior extremity sharp-pointed in both 
sexes, in the male equal to 1/38, in the fema- 
le 1/18,7 of the length of the body. 
Male: Spicules equal, measuring 0,58 mm. 
Sucker cleft-like, without chitinous border. Pa- 
pillae eight, of which three pre-anal and five 
post-anal. 
Female: Vulva situated above the middle 
of body, which it divides in two parts in the 
proportion of 11/14. Eggs 0,047 mm. long 
and 0,034 mm. wide. 
Habitat: intestine of Numida rikwae 
Rchb. 
Geographical distribution: West Africa 
Usanga Lake Rukwae. 
20. Subulura recurvata (Linstow, 1901) 
Railliet & Henry, 1913. 
Plate III fig. 6. 
Dimensions: 
4 Length: 6,78 mm.; width 0,23 mm. 
2 Length: 9,26 mm. width; 0,43 mm. 
Cuticle smooth. Cephalic extremity roun- 
ded, curved dorsally, with six papillae arran- 
ged in a circle. Caudal extremity sharp-poin- 
ted. Oesophagus followed by spheroid bulb 
equal to 1/7 in mate, to 1/7,9 of whole length 
in female. 
Male: Tail curved ventrally, equal to 
1/25,7 of body. Spicules long, voluminous 
measuring 0,88 mm. Sucker elliptic, without 
horny border, flanked by bundles of diverging 
muscles. Nine caudal papillae (1) three pre- 
anal and six post-anal ones. 
Female: Tail sharp-pointed, equal to 1/14 
Note 1. LINSTOW only mentions 8 papillae but 
gives nine in corresponding illustration. 
