•203 
SCLEROSTOME PARASITES OF THE HORSE 
IN ENGLANPi. 
II. NEW SPECIES OF THE GENUS CYLICHNOSTOMUM 
By CHARLES L. BOULEIIGER, M.A., D.Sc., 
Reader in Helminthology, University of Birmingham. 
{From the Research Laboratory in Agricultural Zoology, University 
of Birmingham.) 
(With 5 Text-figures.) 
CONTENTS. 
PAGE 
Introduction ....... 
203 
Cylichnostomum euproctus sp. n. 
204 
„ insigne sp. n. 
207 
„ goldi sp. n. . 
210 
Introduction. 
In a recent number of Parasitology (1916) an account was given 
of the species of Triodontophorus and Oesophagodontus found in the 
alimentary tract of horses in the neighbourhood of Birmingham, more 
particularly in the Redditch district of Worcestershire. In company 
with the worms of these two genera were several species of Cylich- 
nostdmum, occurring in some of the hosts in considerable numbers both 
in the colon and caecum. 
The majority of these parasites could be referred to species described 
in Egypt by Looss (1900, 1901); three, however, proved to be new and 
form the main subject of the present paper. 
Leiper (1910) has recorded the occurrence of a few species of 
Cylichnostomum in horses from the London district, out apart from this 
^ Owing to the author’s absence abroad the proofs of this paper have not been 
submitted to him for correction.—E d. 
Parasitology ix 
14 
