No. 2322. TREMATODE FAMILY EETEROPHYIDAE— RANSOM. 543 



gether. Oral sucker, 70 to 90 [t. in diameter. Pharynx, 44 to 52 i* 

 long by 31 to 41 [x wide. Intestinal ceca extend beyond posterior 

 border of testes. Ventral sucker, 110 to 147 ix long by 77 to 107 \i 

 wide. Eggs deep dark brown in color. 



Ciurea fed dogs, cats, and pigs on various kinds of Roumanian 

 fishes, maintaining appropriate controls, with the result that Loossia 

 romanica developed in the dog, cat, and pig fed upon fish of the fol- 

 lowing species: Esox lucius, Scardinius erythrophthalmus, Ahramis 

 hrama., Carassius carassivrS, Aspitts aspius^ Idus idus, and Blicca 

 bjorkna. Loossia parva developed in a cat fed upon Esox lucius. 

 He considers Blicca bjorkna and Aspius aspius to be the principal 

 intermediate hosts of Z. romanica. 



Genus CRYPTOCOTYLE Luhe, 1899. 



Generic diagnosis. — Heterophyidae : Prepharynx present but 

 usually considerably shorter than esophagus. Esophagus short; bi- 

 furcation of intestine nearer to the oral sucker than to the ventral 

 sucker. Intestinal ceca extend into the posterior end of the body, 

 terminating behind the level of the testes. Ventral sucker, median, 

 more or less rudimentary, in relation with the anterior portion of 

 the genital sucker, and communicating with the exterior through 

 the genital pore, which is located in the center of the genital sucker. 

 Genital sucker well developed, situated in the median line about 

 midway of the body. The genital sinus which opens to the exterior 

 through the genital pore, and into which the vas deferens and vagina 

 open, is posterior of the ventral sucker. A genital papilla projects 

 into the genital sinus and is protrusible through the genital pore. 

 Prostatic portion of vas deferens well developed, dorsal of and be- 

 hind the genital sucker. Seminal vesicle well developed, situated 

 behind the genital sucker, arranged in transverse loops, dorsal of 

 the coils of the uterus. Testes near posterior end of body, irregularly 

 oval or globular, and usually slightly lobed, side by side, or right 

 testis obliquely behind the left. Seminal receptacle in front of and 

 to the right of the left testis. Ovary irregularly oval, or usually 

 lobed, commonly like a clover leaf, situated on the right side of the 

 median line in front of the seminal receptacle. Vitellaria extend 

 across body in front of genital pore, on the dorsal side of the branches 

 of the intestine and often meet in the median line. Anterior limits 

 of the vitellaria usually at a considerable distance posterior of the 

 bifurcation of the intestine ; posteriorly they extend behind the testes 

 and usually cross the median line. Transverse vitelline ducts located 

 in the neighborhood of the boundary between the ovarian and tes- 

 ticular zones. Uterus disposed in a few loops in the median line; 

 none in front of the genital pore. 



Type species. — Gryptocotyle concava (Creplin 1825). 



