For many years it has been recognised that the nematode, Anguillulina dipsaci, is a major pest of narcissus, and growers and scientific workers alike are familiar with the presence of damaged and discoloured tissues within the bulbs, accompanied by swelling and distortion of the foliage, which are, prior to the death of the bulb, associated with attack by this pest. Certain other nematodes are sometimes responsible for somewhat similar injury to the bulbs, and in 1932 Steiner & Buhrer published a short account of those nematodes which have, on occasion, been found within and apparently been responsible for the diseased condition of narcissus bulbs in U.S.A.

There is a definitely significant correlation between the worm-burden and the live-weight increase of grazing sheep.

Page 163, for “Euretrema” read “Eurytrema.”

Page 164, line 8 from bottom, for “Patynosomum” read “Platynosomum.”

Page 174, for “Mesocleum” read “Mesocœlium.”

Page 174, for “Mesocœlium leiper n. sp.” read “Mesocœlium leiperi n. sp.”

Page 176, line 10 from top, for “micron” read “microon.”

1. Salting of pasture was explored as a means of controlling stomach worm infestation of grazing sheep.

2. Infestation with Haemonchus contortus was significantly decreased, but that with Ostertagia spp. and Trichostrongylus axei was not significantly affected.

The identity and status of the nematode described by van Breda de Haan (1902) from the roots of diseased rice plants in the Dutch East Indies under the name of Tylenchus oryzae have remained more or less conjectural owing to the inadequacy of the original description and the absence of any drawings showing its appearance and structure. The present writer was so doubtful of its validity as a species that in his monograph on the genus Anguillulina (1932) he listed it under “species inquirendae.” In April 1934, Dr. J. van der Vecht of the Institute of Plant Diseases, Buitenzorg, Java, visited this Institute and in the course of conversation informed the writer that in his opinion the species was a valid and distinct one. He kindly promised that on his return to Buitenzorg he would collect specimens of the parasite and forward them for examination. In due course a good number of adult specimens, preserved in 5% formalin, were received and on these it has been possible to base the observations embodied in the following pages. The writer desires to express his thanks to Dr. P. van der Goot, Director of the Institute of Plant Diseases, Buitenzorg and to Dr. van der Vecht for their kindness in making this interesting material available for investigation.

During the study of the telamon of various species of Cooperias collected from domesticated and wild ruminants in South Africa and from domesticated ruminants in Great Britain, it was observed that Cooperia serrata Mönnig, 1931 had no telamon and that it also differed from the other members of the genus in other respects.

1. Presence of Molineus patens in England is recorded for the first time.

2. A more complete description is given of the morphology of M. patens including details of the spicules of the male and of some interesting papillae in the female tail.

3. The species of the genus Molineus are reviewed and compared and the suggestion is made that M. americanus is a synonym of M. patens.