216         New Parasites of the Genus A canthocolpus Luhe

length of the genital sinus, besides the measurements of the various organs.
From A. luhei it can be distinguished by the size ratio of the suckers, length
of cirrus sac and the anterior extent of the vitellaria. Besides the points
which distinguish A. orientalis from A. luhei, the former differs from A.
indicum in the position of the genital pore as well.

The author is grateful to the Director and Pathologist of the Imperial
Veterinary Research Institute, Mukteswar-Kumaun, for their kind encourage-
ment.

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