Giant strongle; a very large, cylindrical worm,\of from five inches to three feet long, and from two to six lines in thickness; when recent, of a fine red color. Sexes distinct; the male smaller, more tapering towards both ends; annulate, with shallow, longitudinal grooves; head obtuse, with six papillae; at the tail extremity, a funnel-shaped pouch, out of which protrudes a very thin penis. The female, larger, with obtused caudal extremity, and near it the vulva.

Inhabits the kidneys; is rare both in man and in brutes [found in the dog, the wolf, the marten, the horse, &c]

To these may be added the following nematoda and nematoid pseudo-parasites, some of them being very rare, or even but once met with.