Srivastava 1933. On new Trematodes of frogs and fishes of the United Provinces, India. Part i New Distomes of the family Hemiuridae Luhe 1901 from North Indian fishes and frogs with a systematic discussion on the family Halipegidae Poche 1925 and the genera Vitellotrema Bulletin of the Academy of Sciences Allahabad, 3 1933: pp. 41-60