75227201.htm

ORIGINAL ARTICLES

              A GENERAL ACCOUNT OF THE HELMINTH PARASITES
                  AFFECTING DOMESTIC ANIMALS IN INDIA, WITH
                      METHODS OF COLLECTION, PRESERVATION,
                                            STAINING, ETC.

G. D. BHALERAO, M.Sc.,

Helminthologist, Imperial Institute of Veterinary Research, Muktesar.

(Received for publication on 22nd August 1931.)

Helminth parasites fall into two main phyla of the Animal kingdom : PLATY-
HELMINTHES (flat worms) and NEMATHELMINTHES (round worms) which,
together with the classes they consist of, can be distinguished from one another
with the following keys :—

Key to the phyla of helminths.
Body usually flat, body cavity absent . . .	PLATYHELMINTHES.
Body usually cylindrical, body cavity present .	NEMATHELMINTHES.
Key to the classes of PLATYHELMINTHES.
Alimentary canal present . . . . . .	TREMATODA, p. 1.
Alimentary canal absent . . . . . .	CESTODA, p. 7
Key to the classes of NEMATHELMINTHES.
Alimentary canal present, proboscis absent . .	NEMATODA, p. 14.
Alimentary canal absent, proboscis present . .	* ACANTHOCEPHALA.

TREMATODA.

Trematodes, popularly known as flukes, are parasites belonging to the phylum
PLATYHELMINTHES. When freshly removed from the hosts, they have a deep

* A general account of Acanthocephala has not been given, since the members of this class found
in domestic animals in India are very few.

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