12 PROCEEDINGS OP THE NATIONAL MUSEUM "vol.75 



to lOOfi long by 42/* to 44/a wide, spine 14/x long; mature egg in tissue 

 from 120fi to 140/a long by 68/i, to 72/a wide. 



Cercm^, unknown or unrecognized. 



Hosts. — Primary, mammals {Equus cahallus., E. asimts, Ganielus 

 dromedarius^ and Ovis m^es) ; secondary, unknown. 



Location. — Mesenteric, pancreatic, pelvic, portal, and hepatic 

 veins. 



Distribution. — India. 



Specimens of schistosomes from sheep (United States National 

 Museum Helminthological Collections No. 14828), from Lahore, 

 India, donated by Capt. S. H. Gaiger, have been studied and identi- 

 fied as Schistosotna indicuvi. The males measure 5.9 to 7.6 mm. long 

 by 484/t to 718/i, wide. The anterior part o,f the body is subcylindri- 

 cal, 546/i, to 692/i, long and 235^ wide. Oral sucker subterminal, 172|u. 

 to 187/A in diameter; acetabulum pedunculated, 187/a to 203/* in diam- 

 eter, and situated 156/a to 312/i, caudad of oral sucker. Testes nine 

 in number, each elongated clorsoventrally and with their edges in 

 apposition, and situated dorsally at the anterior end of the gynaeco- 

 phoric canal; an oval seminal vesicle 109/x long by 62/a to 78ju, wide 

 is situated in front of the anterior testis. 



The females measure 7.3 to 14.5 mm. long by l72/x wide. Oral 

 sucker and acetabulum equal in size, 30/i, in diameter ; the acetabulum 

 is situated about 170/a caudad of oral sucker. Ovary elongated, 525/a 

 to 572/x long by 95/x to 125/t wide, and situated caudad of equator of 

 body. The uterus is long and filled with eggs. Vitellaria occupy the 

 entire space from the cecal union to the posterior end of the body. 

 Uterine egg oval, 86/x to 91/i long by 43/* to 47/* wide, and provided 

 with a terminal spine 12/x long. 



SCHISTOSOMA INCOGNITUM Chandler, 1926 



Figure 5 



Specific diagnosis — Schistosoma: 

 Male unknown. 



Female unknown. Egg 95/x to 100/x long by 41.5/x to 50/x wide, with 

 a subterminal spine 7.3/i long. 



Gercarla unknown or unrecognized. 



Host. — Primary, mammals (man) ; secondary, unknown. 



Locatimi. — Feces (for eggs). 



Distribution. — ^Asia ( India ) . 



Genus SCHISTOSOMATIUM Tanabe, 1923 



Generic diagnosis. — Schistosominae : Male larger and longer than 

 female. Suckers present, well developed. Anterior two- fifths of 

 body flattened; posterior three-fifths infolded to form the gynae- 



