During a visit to Kakinada, Andhra Pradesh (India) in April, 1956, the writer examined thirty specimens of the frog Rana cyanophlyctis and found that every one of them was heavily infected with an interesting nematode in the rectum. Large numbers of males and females of this parasite were collected and fixed in 5% formalin containing 10% glycerine. Specimens thus fixed and preserved could easily be dissected for preparing mounts of reproductive organs for detailed study. Before being dissected the preserved worms were at first washed in tapwater and then placed in 70% glycerine alcohol which was allowed to evaporate until the worms were in almost pure glycerine.

Euparadistomum heischi n.sp., the sixth species in the genus, was recovered from a domestic cat on Pate Island, Kenya. In the Dicrocoeliidae, a new subfamily Euparadistominae is proposed for two genera, Euparadistomum Tubangui, 1931 and Stromitrema Skrjabin and Evranova, 1944.

One male and four females were recovered from the anterior part of the intestine of the house rat, Rattus rattus kijabius in Kenya. They were found to belong to an undescribed species of trichostrongyloid for which the name Longistriata (Brevispiculoides) kenyae is proposed. I wish to thank my friend Mr. W. F. J. McClelland for the material, and Professor J. J. C. Buckley for his interest in the work.

A brief redescription is given of Pulmostrongylus herpestis (Khera, 1956) recovered from the pleural cavity of a mongoose, Herpestes sp. from Suva, Fiji. The genus Herpestostrongylns Khera, 1956 is shown to be untenable and placed as a synonym of Puhnostrongylus Hsu, 1935. The genus Acanthoxynema Khera, 1956 is shown to be a synonym of Skrjabinema Vereshchagin, 1926; and the genus Papillosclerus Khera, 1956, a synonym of Metathelazia Skinker, 1931. and its subfamily Osleriinae Khera, 1956 is supressed.

In a review of the genus Encyclometra, only three species are considered to be valid : the genotype Encyclometra colubrimurorum (Rudolphi, 1819) Dollfus, 1929 ; E. japonica Yoshida and Ozaki, 1929 with synonyms E. microrchis Yamaguti, 1933, E. koreana Park, 1940 and E. vitellata N. K. Gupta, 1954 ; and E. asymmetrica Wallace, 1936. The intestinal caeca are shown to be a constant, useful and reliable character to differentiate the various species in the genus. In the light of some new information, the genus is slightly amended.