AiiT. 13 TEEMATODE PARASITES OF MARINE MAMMALS PRICE 29 



yond the inner limits of the ceca. Eggs " 1/1000 of an inch from 

 pole to pole by 1/2100 inch in breadth." 



Host. — PJatanista gangetica. 



Location. — Bile ducts. 



Distribution. — Asia (India). 



Remarks. — The foregoing description is taken largely from Cob- 

 bold's (1876) figure of D'lstotna campula. The description which 

 he gives for this form is very incomplete, and almost no measure- 

 ments are given. Cobbold confused this species with Gaiiifula oh- 

 lo7iga^ a species which he had described earlier from Phocaena pho- 

 coeiia i=P. coTnnmmis). his identification being based largely on 

 the zigzag course of the intestinal ceca. The species from Platanista 

 gangetica is unquestionably an opisthorchid and has been placed in 

 the genus Cyclorchi^ by Liihe (1908) as species inquirenda. The 

 disposition of the reproductive organs, so far as they have been fig- 

 ured by Cobbold, is strikingly similar to that in C. amphileucus so 

 that there appears to be good reason for including it in the same 



genus. 



Genus AMPHIMERUS Barker, 1911 



Generic diagnosis. — Opisthorchiinae : Body elongated and flat- 

 tened, anterior end attenuated. Cuticle frequently covered wholly 

 or in part with small spines. Excretory vesicle as in Opisthorchis. 

 Cirrus pouch and cirrus absent ; testes in posterior part of body, sim- 

 ple or lobate, situated diagonally to long axis of body. Ovary an- 

 terior to testes, simple or lobate; seminal receptacle well developed; 

 Laurer's canal present. Vitellaria well developed, lateral of in- 

 testinal ceca, divided into two distinct regions by a break opposite 

 the ovary, not extending anteriorly beyond the acetabulum, but fre- 

 quently extending posteriorly to or beyond the posterior testis. 

 Uterus anterior to ovary as in Opisthorchis; the coils may extend 

 laterally beyond the inner limits of the ceca. Parasites of the bile 

 ducts of mammals, birds, and reptiles. 



Type species. — Amphimerus ovalis Barker, 1911. 



AMPHIMERUS LANCEA (Dicsing. 1850) Barker, 1911 



Plate S, Figueks 32-33 



Synonyms. — Distommii lancea Diesing, 1850, p. 334; Opisthorchis 

 lancea (Diesing, 1850) Braun, 1901c, p. 897. 



Description. — Aniphimeriis: Bod}^' lanceolate, 5.5 mm to 12.5 mm 

 long by 1 mm to 2.8 mm wide ; anterior end conical and shorter than 

 the flattened posterior portion ; margins of posterior portion serrated. 

 Oral sucker subterminal, 330/x to 360/x by 510/* to C60/a; acetabulum 

 510/x to 1.2 mm in diameter, situated one-third of the body length 



