210 
Sclerostomes of the Horse 
Cylichnostomom gold! sp. n. 
Specific diagnosis. Cylichnostomum: Body small and rather 
delicate. Head continuous with the body, 80-100p in breadth. The 
mouth-collar is rather high and distinctly separated from the rest of 
the skin. The lateral head-papillae are very inconspicuous, the sub¬ 
median small and conical in shape (Text-fig. 5 a). 
Fig. 6. Cylichnostomum goldi sp. n, A. Anterior extremity of the body in ventral view, 
X 215. B. Lateral view of posterior extremity of female, x 72. C. Lateral view 
of male bursa, x 72. D. Ventral view of the genital cone to show the appendages, 
x215. 
In general shape and arrangement the mouth-capsule and the leaf- 
crowns resemble those of C. alveatum Looss and C. catinatum\ the 
elements of the external leaf-crown are large and leaf-hke and number 
about 20; the internal leaf-crown is composed of 30-32 shorter leaves. 
The mouth-capsule has its walls thickened in much the same manner 
as in C. catinatum, it measures 45-60 /a in breadth and about 20/a in 
height. 
