30
No. XIV. Female.—Length 18 700mm. Body thread-like, elongated, brownish in colour,
slightly pigmented, narrowed towards either extremity, especially towards the tail. Integu-
ment smooth, not transversely striated. Tissues of the body run longitudinally in parallel or
wavy lines. Mouth small, guarded by two lips. Æsophagus short. Large Intestine straight,
filled with brownish pigmented material. Ratio of large Intestine to body length 1: 4.6. Tail
blunt, with two long and strong papillæ 0.024 mm. in length and .006 mm. in width,
placed .060 mm. from the tip of the caudal extremity. No ova visible in genital tubes,
Saharanpur.
No. I worm taken from the eye of a country-bred horse (No. 1536). Female.—Body
thread-like, white in colour, not pigmented, narrowed towards either extremity, especially
towards the tail Length 21.472 mm. Integument smooth, not transversely striated ;
but the tissues of the body, on either side of the intestinal canal, run longitudinally in straight
lines. Mouth small, round, guarded by two lateral lips, 0.010 mm., interval between
them, externally by two papillæ 0.036 mm. Œsophagus short, not bulbous, capillary
lumen. Large Intestine straight, one-fifth of body length. Tail acute, double spiral twist,
with two long and stumpy papillæ at the sides, a little in advance of the end and directed
backwards, 0.020 long and 0.010 mm. wide. The extreme tip of the caudal extremity pre-
sents the shape of a small ball, of which three-fourths is free and one-fourth attached. Anus
situated 0.2160 mm. from the tip of the tail. Uterus does not contain ova.
No. II worm from eye of Australian horse (No. 2094). Female.—Length 28.710 mm.
Body thread-like, elongated, not pigmented, narrowed towards either extremity, especially
towards the tail. Integument smooth, not transversely striated, but tissues of body run in
lines longitudinally. Mouth centrally placed, prominent, guarded by two lips, interval between
0.008 mm. and laterally by projecting papillæ, one on each side, 0.0092 mm. in length,
from base to ball like extremity at apex. Two minute papillæ are visible, one on either side
of the body opposite to one another, 0.364 mm. from the buccal orifice, 0.0032 mm. long,
0.0060 in width at their bases. Œsophagus short. Large Intestine straight, one-seventh of
body length. Tail slightly twisted, in front of its termination are two papillæ, lateral in
position, conical in shape, with summits directed backwords, 0.020 mm. in length and
0.010 mm in width. Extreme end of tail terminates in a ball shaped tip, three-quarters
of a circle, free. Uterus does not contain ova.
No. III. Filaria from the eye of an Australian horse (No. 2225). Male.—Length 18.667
mm. Body thread-like, elongated, white in colour, not pigmented, narrowed towards
either extremity, especially towards the tail. Integument smooth, not transversely striated,
but the body tissues run in longitudinal lines. Some inflammatory material at one point of
body, resembling the callous thrown out in the course of a long bone after fracture. At this
spot there appears to have been a solution of continuity. Mouth small, lips gaping, 0.008 mm.
interval, cavity of mouth somewhat circular in form, guarded externally by two papillæ
0.040 mm. apart. Œsophagus short. Large Intestine straight; ratio to body length 1:3.5
Caudal extremity curled, tail curved forwards, no lateral papillæ, directed backwards, only
those bordering the anal cloaca visible, 0.020 by 0.010 mm. Two Spicules, both retracted.
No. IV. Filaria removed from the eye of an Australian horse (No. 1889). Female.—Body
thread-like, elongated, not pigmented, narrowed towards either extremity, especially towards
the tail. Integument smooth, not transversely striated, but the body tissues run longitudi-
nally in parallel or wavy lines. Mouth small, presents two lips, interval between 0.016 mm.
and laterally guarded by two papillæ, 0.040 mm. interval. Œsophagus short and narrow.
Large Intestines straight, one-sixth of the body length. Tail acute, curled; no large lateral
papillæ, directed backwards. Uterus does not contain ova.
On analysis of the foregoing facts we find that of the fourteen (14) specimens of in
Filaræ obtained from Karnal, eight (8) were males and six (6) females, whereas of the
four (4) from Saharanpur, three (3) were females and one (1) male, making a total of nine
(9) of each sex. Of the parasites obtained from the former locality all are more or less
pigmented ; several considerably so, whilst the latter are quite free from pigmentation. For
the time being we will exclude Nos. VIII and X Karnal, and consider the characters of
the remaining sixteen (16).
Male.—Length varied from 18.150 m m. to 32.802 m m. the mean being 23.723 mm.
width from 10.920 to 0.3760 mm. mean 0.2920 mm. The tails are provided with seven papillæ,
on either side. Three pre-anal and three post-anal in position, whilst one is found bordering
the anus laterally. Only four males out of nine have the prominent subterminal papillæ
Female.—Length varied from 18.700 mm. to 37.400 mm. the mean being 25.772 mm.
width from 0.4860 to 0.4360 mm. mean 0.2761 mm. In five instances, the prominent
subterminal papillæ are present., whilst in two female specimens these appendages are absent
ovaries have no distinct eggs. The vulva is situated about 0.100 mm. from the buccal orifice.
The whole of the above filariæ present fine longitudinal tissue markings which in
some parts of the body assume wavy lines, especially towards the middle and towards the
caudal extremity of the body.