C. L. Boulenger 
211 
The oesophageal funnel is very well developed, there is no dorsal 
gutter (Text-fig. 5 a). 
The oesophagus is long (300-350/a) and somewhat slender, being 
not markedly swollen behiod the level of the nerve-ring, its maximum 
breadth is 70-75/a. 
The excretory pore is situated rather far back on the body, at a level 
about half-way between the nerve-ring and the posterior extremity of 
the oesophagus, i.e. 250-300/a from the anterior end of the body (Text- 
fig. 5 a). 
The cervical papillae are situated close behind the excretory pore 
(Text-fig. 5 a), 270-300 p. from the anterior extremity. 
Female: 6-6-7 mm. in length, maximum breadth 280-300p. The 
whole tail-region (Text-fig. 5 b) is bent dorsally and takes up a position 
almost at right angles to the main axis of the body. The vufva is 
situated about 200p from the posterior extremity. 
The anus is 100-110 p from the posterior end of the body, behind 
this level the tail is suddenly narrowed and terminates in a slender point. 
The vagina is short (Text-fig. 5 b), the eggs have an average length 
of lOOp by an average breadth of 50 p. 
Male: 5-2-6 mm. in length, with a maximum body breadth of 
230-280p The bursa (Text-fig. 5 c) has a short dorsal (median) lobe 
which when spread out appears approximately semicircular. The 
dermal collar is well developed both on the anterior and posterior 
surfaces of the genital cone. The appendages of the genital cone are 
very characteristic (Text-fig. 5 D, A.g.c.) having the form of very thin 
dehcate plates, each provided with two slender, finger-shaped processes. 
Cylichnostomum goldi was found on several occasions both in the 
colon and caecum, always in small numbers. It obviously belongs to 
the group of species which includes C. alveatum and C. catinatum. 
I have named the species after Mr J. A. Gold, M.K.C.V.S., of 
Redditch, to whom I wish again to express my thanks for his kindness 
in supplying me with material from infected horses in his district. 
REFERENCES. 
Boulenger, C. L. (1916). Sclerostome Parasites of the Horse in England. I. The 
Genera Triodontophorus and Oesophagodontvs. Parasitology, vm. (4). 
Leipee, R. T. (1910). Exhibition of a Series of Specimens of Entozoa. Proc. ZooL 
Soc. 1910 (1), 147. 
Looss, A. (1900). Notizen zur Helminthologie Egyptens. III. Die Sclerostomen 
der Pferde und Esel in Egypten. Centralbl. Bakter. etc. Abt. 1. xxvn. 150-184. 
