The breeding and raising of small mammals, such as skunk, minx and fox, for their fur, is a comparatively young industry in Britain, and one of the most serious hindrances to the successful husbandry of these animals is the occurrence, at any rate, in the skunk, of certain helminth parasites. We have been investigating the worms sent to us from a skunk farm, where the stock is very extensively infected, and where serious injury to the animals and great deterioration of the coat is attributed to these parasites.

The earliest record of a mammalian lung fluke was made by Diesing in 1850, who described Distomum rude from the lungs of Lutra brasiliense, from Brazil. This species was transferred to the genus Paragonimus by Stiles and Hassall in 1900.

The only account of the larval stages of Bunostomum trigonocephalum (Rud.) which I have been able to find is a brief note by Baillet (1866), in which he states that the larvæ of Uncinaria cernua Crep. = B. trigonocephalum (Rud.), develop in water and hatch within four or six days. The newly hatched larvæ are “rhabditiform,” .35 to .4 mm. long and ·23 to .3 mm. broad, and the tail is very thin and filiform.

During August, 1922, acting as an Honorary Parasitologist to the Zoological Society of London, I examined an Indian Cobra, the “Hamadryad” Naja bungarus, which died in the Society's gardens. A single trematode was found in the Gall bladder. It was living and active. A careful search for other examples of this trematode in the snake proved negative.

While engaged on work with the Filariasis Commission in British Guiana in 1921, under the direction of Professor R. T. Leiper, the writer had occasion to examine a number of birds and mammals, and from these eleven species of Entozoa were collected. Three species are new to science, and one of these, an Oxyurid from Pithecia monachus, has been placed in a new genus Trypanoxyuris.