29
1: 4.5. Tail acute, curved forwards at the extremity. Two spicules, both retracted. Pre-
anal, post-anal and lateral papillæ, also subterminal.
No. VII. Male.—Length 32.802 mm. Body thread-like, elongated, brownish in colour,
slightly pigmented, narrowed towards either extremity, especially towards the tail, and
there is a well marked neck. Integument smooth, not transversely striated. Tissues of the
body run longitudinally in parallel or wavy lines. Mouth small, cen raly placed, guarded
by two lips, 0.012 mm. apart. Æsophagus short. Large Intestine straight, contains
brown pigmented material, one-sixth of body length. Tail twisted in a cork screw spiral.
Two spicules, both retracted. No subterminal papillæ visible, but the usual seven pairs
are present.
No. VIII. Female.—Length 25.003 mm. Body flat, like a piece of tape, elongated,
white in colour, but pigmented. Head broad, but slightly narrowed towards the mouth, much
more so towards the caudal extremity. The body is not transversely striated, but the integument
is serrated at intervals, and at these spots lines of pigment dip into the tissues and almost cross
the body. These are most marked towards the caudal extremity of the body. Ten of these
spaces, between the pigment, average 0.176 mm. The tissues of the body run longitudinally
in parallel or wavy lines, the individual fibres varying from 4 to 8 μ in diameter. Mouth,
guarded by two lips, 0.016mm. apart, and externally by two small papillæ, 0.0052 mm.
apart. Œsophagus 0.228 mm. in length. Large Intestine tortuous, 4.777 mm. in length.
The caudal extremity is deeply pigmented, with the exception of the well marked superficial
cuticle. Two strong papillæ at the sides, a little in advance of the end, and directed back-
wards, 0.060 mm. from the tip of the tail, .0018 mm. in length and 0.010 mm. in
width.
No. IX Male.—Length 21.725 mm. Body thread-like, elongated, pigmented, narrowed
towards either extremity, especially, towards the tail. Integument smooth, not transversely
striated. Tissues of body run longitudinally in parallel or wavy lines. Mouth small.
Œsophagus 0.178 mm. in length. Large Intestine straight, filled with brownish, pigmented
material, nearly one-fifth of body length. Rectum contains some dark, brown débris.
Tail acute, slightly curled. Two strong papillæ subterminate at the sides, directed back-
wards, 0.036 mm. long by 0.019 mm. in width at the base. Two spicules, both retracted—one
measuring 0.088, the longer 0.154 mm.
No. X. Female.—Length 23.463 mm. The body is flat like a piece of tape, elongated,
white, but pigmented, slightly narrowed towards the head, but markedly so towards the caudal
extremity. Integument. The cuticle is well marked along the side of the head and becomes
serrated lower down. The body is transversely striated. The cross markings commence
0.360 mm. from the buccal orifice, and the first ten measure, 0.1720 mm.; the intervening
spaces vary in width between 0.0160 and 0.024 mm. The tissues of the body, on either side
of the intestine, run longitudinally in wavy lines, coarser than in the filariæ previously men-
tioned, measuring 0.004 mm. in thickness. Mouth plainly visible, not guarded by papillæ, is
round and fixed in a transparent chitinous setting, apperture 0.018 mm. in diameter. Œsopha-
gus 0.200 mm. in length. Large Intestine somewhat tortuous, difficult to make out any well
defined division between large and small intestine. No subterminal papillæ. No ova in
genital tubes.
No. XI. Female.—Length 26.686 mm. Body thread-like, elongated, pigmented, narrowed
towards either extremity, especially towards the tail. Integument smooth,. not transversely
striated; but the tissues of the body, on either side of the intestinal canal, run longitudinully
in straight lines. Mouth small, guarded by lips, but externally placed ; no papillæ noticeable.
Œsophagus short, 0.228 mm. long. Large Intestine straight, filled with brownish, pigmented
material, nearly one-fifth of body length. Tail acute, slightly curved. No subterminal
papillæ. No ova in genital tubes.
No. XII. Male.—Length 26.543 mm. Body thread-like, elongated, slightly pigmented,
narrowed towards either extremity, especially towards the tail. Integument smooth, no trans-
verse striations. Tissues of the body run longitudinally in parallel or wavy lines. Mouth
small, guarded by lips, but no papillæ visible. Œsophagus 0.209 mm. long. Large Intestine
straight, filled with brownish pigmented material. Length, one-sixth of body. Tail acute,
curved like a button-hook. Two spicules, both retracted. Seven pairs of papillæ, but no
subterminal present.
No. XIII. Male.—Length 20.020 mm. Body thread-like, elongated, white in colour-
slightly pigmented, narrowed towards either extremity, especially towards the tail. Integu-
ment, for the most part, smooth, not transversely striated. Tissues of the body run longi,
tudinally in parallel or wavy lines. Mouth small, centrally placed, guarded by two lips ;
interval between 0.010 mm. in width. On either side of the mouth a flat facet is noticeable,
oval in shape, about 0.020 mm. in length and 0.012 mm. in width. These look forwards
and outwards, at a distance equal to their length, from the respective lips. Œsophagus 0.196
mm. Large Intestine straight, filled with brown pigmented debris, one-fifth body length.
Tail acute, with two spicules, both retracted. Seven pairs of papillæ, and subterminal in
addition.