212 
Sclerostomes of the Horse 
Looss, A. (1901). The Sclerostomidae of Horses and Donkeys in Egypt. Rec. 
Egypt. Oovt. School of Med. i. 25. 
Mehlis (1831). Oken's Isis, 79. 
Railliet, a. and Henby, A. (1902). Sur les Scl6rostomiens des Equid^s. C. r. Soc. 
Biol. 1902, p. 5. 
EXPLANATION OF LETTERING. 
A.g.c. 
Appendage of the genital cone. 
L.p. 
Lateral head-papilla. 
An. 
Anus. ' 
M.c. 
Mouth collar. 
Ga. 
Wall of mouth-capsule. 
N.r. 
Nerve-ring. 
G.p. 
Cervical papilla. 
Oes. 
Oesophagus. 
D.c. 
Dermal collar of the genital cone. 
Ov. 
Ovejector. 
E.l.c. 
External leaf-crown. 
P.b.p. 
Prebursal papilla. 
E.p. 
Excretory pore. 
Sp. 
Spicule. 
0. 
Guiding piece (gubemaculum). 
S.p. 
Submedian head-papiUa. 
G.c. 
Genital cone. 
T. 
Triangular plate of the genital 
Lie. 
Internal leaf-crown. 
cone. 
Int. 
Intestine. 
Va. 
Vagina. 
L. 
Ventral lip of the genital cone. 
Vu. 
Vulva. 
