22 PROCEEDINGS OF THE NATIONAL MUSEUM vol.75 



Male 4.2 to 8 mm. long by 340/i. to 476/x wide. Cuticle without, 

 tubercles. Oral sucker subterminal, 255/x long by 154/a wide; aceta- 

 bulum 289|U, by 278/1, and situated about 425jli caudad of the oral 

 sucker. The esophagus shows two dilations and is surrounded by 

 the esophageal glands; intestinal ceca unite caudally about 1.2 mm. 

 from posterior end of body ; in some specimens transverse com- 

 missures are present in posterior half of body which connect the 

 two ceca. The testes, 70 to 80 in number, occupy a space about 3 mm. 

 long in the median line. The genital pore lies immediately caudad 

 of the acetabulum. 



Female 3.4 to 5.5 mm. long by 102((i wide in region of ovary ; body 

 slender and almost circular in cross section. The suckers measure 

 72^ in diameter, and the acetabulum is situated about 170/* caudad 

 of the oral sucker. Esophagus simple; intestinal ceca unite 1.632 

 mm. from posterior end of body. Ovary spiral, 255/i, long, and situ- 

 ated anterior to cecal union. The vitellaria are composed of elon- 

 gate follicles which occupy the space from the cecal union to the 

 posterior end of body. Egg oval, 72/t to 74/x long by 22/x to 26/* 

 wide, and provided with a spinelike prolongation at each pole. 



Cereari<t unknown or unrecognized. 



Hosts. — Primary, mammals {Bos taurus and Felis domestica) ; 

 secondary, unknown. 



Location. — Branches of the portal vein. 



Distribution. — Asia (Russian Turkestan) and Europe (France). 



ORNITHOBILHARZIA BOMFORDI (Montgomery, 1906), new combination 



Figures 51-52 



Synonyms. — Schistosoma bomfordi Montgomery, 1906, pp. 143- 

 147 (in Bos indicus; India). 



Specific diagnosis. — Ornithohilharzia : 



Male 7.089 mm. long ; anterior portion of body 357/i wide ; posterior 

 portion 408/* wide in region of testes and 170/* in diameter at caudal 

 extremity. The anterior portion of the body is flattened and the pos- 

 terior portion inrolled, forming the gynaecophoric canal. Cuticle 

 tuberculate and spiny; spines also present in suckers and in gj'nae- 

 cophoric canal. Oral sucker cup-shaped, 306/* in diameter; acetab- 

 ulum pedunculated, 340/* in diameter, and situated 850/* caudad of 

 oral sucker. Testes 61 in number, oval in shape, and measuring 

 100/* by 90/*, the total length of the chain of testes being 3.06 mm., 

 or about three-sevenths of total body length. The seminal vesicle 

 is situated in front of the testes, about 200/1 caudad of the union of 

 the anterior and posterior portions of the body. 



Female 7.31 mm. long by 172/i wide at the ovary. Cuticle devoid 

 of spines, except in suckers and at posterior end of body. Oral 



