Cestode Parasites — Y amaguti 
27 
0.2-0.35 mm X 0.08-0.11 mm, oblique to 
median axis of strobila, with its base alternating 
irregularly from one side of median line to the 
other, containing very narrow ejaculatory duct. 
Ejaculatory duct joining vagina just distal to 
vaginal sphincter to form a short cirrovaginal 
duct, which opens middorsally. 
Ovary consisting of several lobes, rosette- 
shaped or bipartite, 0.15-0.35 mm wide, up to 
0.45-0.55 mm wide in strongly flattened speci- 
mens, situated in median held immediately 
posteroventral to cirrus pouch. Vagina provided 
with a conspicuous bulbous sphincter just before 
uniting with ejaculatory duct, curved postero- 
ventrad to join germiduct anterior to isthmus of 
ovary. Vitelline follicles diffuse in whole cor- 
tical parenchyma except marginal areas. Gravid 
uterus forming a few spiral turns and opening 
ventrally in median field anterolateral to base 
of cirrus pouch or level with it. Eggs oval, 
operculate, 60-68p X 3 2-40 p in life; con- 
tained ovum unsegmented. 
3 
Figs. 3 A-E. Bothriocephalus carangis n. sp. A, scolex of paratype from Caranx ferdau, ventral view; B, 
mature proglottis of holotype from Caranx helvolus, dorsal view; C, longitudinal section of paratype from 
Caranx ferdau; D, longitudinal section of mature proglottis of paratype from Caranx ferdau through genital 
pore; E, longitudinal section of mature proglottis of paratype from Caranx ferdau through uterine pore. 
