PAEASITIC NEMATODES FROM TONKIN, INDO-CHINA, INCLUDING A NEW SPECIES OF ASCARIDIA By Benjamin Schwartz Of the Zoological Division, Bureau of Animal Industri/, United States Depart-ment of Agriculttire The following report is based on a small collection of nematodes, largely from domestic animals, received from Maj. E. Houdemer,. Chief of the Clinic at the Ecole Veterinaire at Hanoi (Tonkin) Indo-China. In addition to a new species of Ascaridia from the goose which is described in this paper, there were found a species of Rictularia from a rat which is probably a new species, and speci-mens of the genus Porrocaecum from a heron (genus and species unknown) which require further study. Superfamily OXYUROIDEA Family OXYURIDAE Genus OXYURIS Rudolphi, 1803 OXYURIS EQUI (Schrank, 1788) Hos t. — Equ US cah a Ihis . Location. — Unknown. Only short-tailed forms were found, but Major Houdemer states that long-tailed forms also occur in horses in Tonkin. Superfamily ASCAROIDEA Family ASCARIDAE Genus ASCARIS Linnaeus, 1758 ASCARIS LUMBRICOIDES Linnaeus. 1758 Host. — Homo sapiens. The specimens which are sexually immature were vomited by a breast fed infant (native) only two months old. No. 2538. — Proceedings U. S. National Museum, Vol. 66, Art. I. 23549—25 1 ' 1
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