Fie. 
Fic. 
EXPLANATION OF THE FIGURES. 
PLATE I. 
1.—Distomum heterostomum, Rud. (?); vi, vitellogen ; sch, ‘* schluck- 
ceffnung ;” ¢, testes. 
2.—End of an intestinal coecum of the same. 
3.—D. asperum, n. sp.; ga, genital aperture; vo, the ovary; tv, 
transverse vitello-duct. 
4.—Head of same; the characteristic disposition of the hooks is best 
represented on the right side. 
5—An isolated body-spine of the same. 
6.—D. reticulatum, n. sp.; the ventral sucker (vs) is flattened ; wu, the 
uterus ; lv, the ventral; Jvd, the dorsal longitudinal vitello- 
duct ; ¢é, the testicular tubes. 
7.—Surface view of intestinal epithelium of D. variegatum, Rud. 
8.—Caudal sucker of Octobothrium sagittatum, F. S. Leuck. (2). 
9.—Polystomum oblongum, n. sp.; J, larva; ck, cirrus-coronet; va, 
vaginae ; ov, shell-gland (?). 
. 10.—Large caudal hook of the same. 
. 11.—Small caudal hook of the same. 
. 12.—Sphyranura Osleri, n. sp.; ov, eggs. 
. 13.—Large caudal hook of same. 
. 14.—Small caudal hook of same. 
. 15.—Proglottis of Taenia dispar, Goeze. 
. 16.—Cervical papilla of Filaria triaenucha, n. sp. 
. 17.—Head of Ancyracanthus cystidicola, Schn. 
. 18.—Head of A. serratus, n. sp. 
PLATE II. 
. 19.—Octobothrium sagittatum, F. S. Leuck. (?); ga, genital aperture ; 
0, amature ovum; ov, the ovary; vd, vas deferens. 
. 20.—Anterior end of same to show shape of mouth, anterior suckers 
and pharynx. 
21.—-Genital sucker of same; a, superficial; 6, deeper view. 
22,—Mature ovum. 
