On the Classification of the Ascaridae. III. A Revision of the Genus Dujardinia Gedoelst, with a Description of a new Genus of Anisakinae from a Crocodile

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Abstract
The genus Dujardinia was proposed by Gedoelst (1916) for the reception of a form considered to be identical with Ascaris helicina Molin, 1860. In the same paper another species, Ascaris nigra, was described by Gedoelst, who mentions that it has close affinities with A. helicina, but does not actually refer it to Dujardinia. The present writer (1920) assigned Ascaris halicoris Owen, 1833, to this genus. More recent work renders it somewhat doubtful whether this species really belongs to Dujardinia, for reasons which will be pointed out later, and though for the present it is retained, it must be regarded as a somewhat aberrant form.