NOTES AND DESCRIPTIONS OF SOME PARASITIC HELMINTHS 483 
C. FELINEUS (Syn. S. subaequalis of Seurat, 1913) from Felis ocreata (Algeria) and 
Felis domestica (India). 
The material from the lion described above resembles C. subaequalis as de- 
scribed by Vevers in possessing teeth with bifid terminations. The oesophagus 
measures only about one-tenth the total body length, whereas, if Vevers was 
right in stating that the measurements of his material from the tiger corresponded 
in every way, with the exception of the measurements of the buccal capsule, to 
those of the worm described by Seurat, we must assume that the oesophagus in 
C. subaequalis is not less than one-fourth the total body length. Attention has 
been called to the rather unusual variation in the position of the vulva with 
reference to the end of the oesophagus and so this feature cannot be regarded 
as having differential specific value. The location of the parasite of the lion, 
free in the intestine and not encysted in the walls of the oesophagus or stomach, 
as noted in other species, may or may not be of specific significance in this in- 
stance. Further than to note these differential points the parasite from the lion 
eannot be distinguished from Cylicospirura subaequalis. 
OXYSPIRURA ELANI n. sp. 
The material upon which the description is based consists of five male worms 
fixed in formalin. In the preserved state the worms are collapsed to a flat condi- 
tion, and consequently the measurements of the width of the body are more than 
normal. The length is from 10.8 mm. to 11.5 mm.; greatest breadth, 0.93 mm. 
The body is robust and covered by a transparent, coarsely striated cuticulum. It 
tapers to an almost acute anterior extremity. Posteriorly the body is curved like 
an awl to end in an obtusely rounded tail. There are no cephalic cuticular alae, 
and membranous expansions of the cuticulum are absent in the caudal region. 
Cervical papillae are easily discernible in one specimen where they are placed 
asymmetrically 640u and 750u from the cephalic extremity on the right and left 
sides respectively. The mouth (No. 399, Fig. 5), circular in outline, is surrounded 
by a narrow cuticularized ring, the margins of which do not show indentations 
or clefts such as described by Ransom (1904)! for O. mansoni. Two small, 
lateral papillae, the so-called amphids, are visible and, in addition, when the head 
is viewed en face, four pairs of closely approximated papillae are to be seen in sub- 
median positions. The mouth opens into a more or less hemispherical buccal cap- 
sule or pharynx, 45 in width and about 274 deep. The cylindrical oesophagus, 
which does not appear to be divisible into component glandular and muscular por- 
tions, is about 0.85 mm. in length. Its lumen, in the anterior region, is found to 
be triradiate in cross-section. The nerve commissure surrounds the oesophagus 
0.32 mm. from the anterior extremity. The position of the excretory pore could 
not be determined. 
The reproductive organs consist of a testis which extends from a point 
1.5 mm. behind the oesophagus, and posteriorly is continuous with a thick-walled 
ejaculatory duct. The cloaca is situated 0.25 mm. from the caudal extremity. 
1 Ransom, B. H.: Manson’s eye-worm of chickens (Oryspirura mansoni) with a general review 
of nematodes parasitic in the eyes of birds. Bull. 60. Bur. Anim. Ind. U. 8S. Dept. Agric., Washington 
(1924), pp. 1-54. 
