330            Gasterostomatous Parasites of Indian Food-Fishes

The author submitted a paper on the " Studies on the Gasterostomatous
parasites of Indian fresh-water fishes " to the Academy of Sciences, United
Provinces; India, on the 14th March 1935 which included the descriptions of
Bucephalus indicus, Bucephalus gangeticus and Bucephalopsis garuai Verma,
1936, and Bucephalopsis fusiformis Verma, 1936. But as Mr. Verma claimed
to have collected his material earlier than the author, the paper was with-
drawn.

The species B. garuai is represented in the author's collection by a large
number of specimens obtained from the gut of Silundia gangetica which was
found to be nearly always infested with these flukes. Often the infestation
was found to be very heavy. The number of specimens collected from a
single host varied from 20 to 860. The specimens from Silundia gangetica
resemble those from Pseudotropius garua described by Verma but for slight
differences in measurements as given on p. 329.

The author's specimens differ from Verma's in the number of vitelline
follicles and the anterior extent of vitellaria, in the shape of excretory bladder
and the absence of a muscular sphincter around the genital pore.

             BUCEPHALOPSIS FUSIFORMIS, Verma, 1936.

Host— Eutropiichthys vacha Day.
Habitat—Intestine.
Locality—Allahabad.

The author collected a large number of specimens of this species from the
gut of Eutropiichthys vacha during the winter months of 1932 to 1935 at
Allahabad. The specimens in the author's collection resemble closely the
form described by Verma except for the differences in measurements as given
below:—

                            Text-fig. 7, p. 331.