TREMATODES FROM FISHES — LINTON 



83 



CYMBEPHALLUS FIMBRIATUS Linton 



Plate 2, Figukes 13-17 



Distomum vitcllosmn Linton, Bull. U. S. Fish Comm. for 1899, p. 426, 1901; 



Bull. Bur. Fisheries, vol. 24, pp. 388, 390, figs. 176-178, 1905. 

 Cymhephallus fimbriatus Linton, Journ. Washington Acad. Sci., vol. 24, p. 82, 



1934. 

 Body elongate, not varying much in diameter; neck short, more 

 or less conical; ventral sucker larger than oral, prominent, some- 

 times pedicelled, surrounded by a raised border, with many short 

 papillae; pharynx longer than broad; esophagus longer than phar- 

 ynx ; intestines extend to posterior end ; genital pore in front of ven- 

 tral sucker, to left of median line, the opening of the ejaculatory 

 duct a muscular genital sucker; opening of metraterm, with 

 sphincter, on a blunt papilla at anterior border of genital sucker; 

 seminal vesicle elongate, curved, extending to from one third to 

 more than one half the distance between the ventral sucker and 

 the ovary; testes two, one following the other, with but a short in- 

 terval between, in some cases lobed. Ovary at or near interior 

 border of first testis, usually not lobed, although a tendency toward 

 a lobed condition was observed in a few cases; shell-gland at an- 

 terior border of ovary. No seminal receptacle seen; in one speci- 

 men sperm was seen in front of the shell gland, where it appeared 

 to be lying in the early folds of the uterus. Vitelline reservoir at 

 the dorsal, anterior border of the ovary ; vitellaria diffuse, filling the 

 body back of the testes, and along the margins, not usually inter- 

 rupted opposite the testes, and extending to a point about half-way 

 between the ovary and ventral sucker; uterus between ovary and 

 ventral sucker; ova about 0.06 by 0.03, in balsam. 



Table 20. — Measurements of five specimens of Cymbephallus fimbriatus 



in ialsam, 



Measurement 



Length 



Maximum breadth 



Oral sucker, length 



Oral sucker, breadth . . 



Pharynx, length 



Pharynx, breadth 

 Ventral sucker, length,. 

 Ventral sucker, breadth 

 Ova, 0.06 by 0.03. 



Mm. 

 3.70 

 .56 

 .19 

 .15 

 .14 

 .07 

 .28 



This species differs from C. vitellosus in its larger size, and in 

 having longer and more numerous papillae around the ventral sucker, 

 in the more or less lobed testes, and the larger ova, and in the rela- 

 tively longer seminal vesicle. Also, while C. vitellosus in many 



