Abstract
During a survey of helminth parasites of vertebrates from Karachi, Sindh, Pakistan Opisthorchis felineus (Rivolta, 1884) Blanchard, 1895 was recorded from Gall bladder of dog. Slight variations were observed in the shape of ovary and testes. Besides these all characters were similar to O. felineus (Rivolta, 1884) Blanchard, 1895. Paradistomoides brayi n.sp. was recorded from Gecko sp. This species is characterized by an oval to elongate body, oral sucker terminal, pharynx well developed; esophagus short; acetabulum in anterior half of body; testes oval, unequal; ovary post-acetabular; vitellaria follicular bunches extending from level of acetabulum to posterior level of cirrus sac; seminal vesicle inverted C-shaped, cirrus sac funnel-shaped; genital atrium prominent, eggs yellowish brown, oval, numerous measuring 0.025 – 0.030 by 0.020 – 0.025.
