[Read before the Wellington Philosophical Society, 4th October, 1925; received by the Editor, 31st December, 1925; issued separately, 17th November, 1926.]

Since the publication of “Ustilaginaceae, or Smuts of New Zealand” (Trans. N.Z. Inst., vol. 55, pp. 397–433, 1924) and the third supplement (Ibid., vol. 56, p. 74) the following species has been collected.

Ustilago hypodytes (Schlecht.) Fries, Syst. Myc., vol. 3, p. 518, 1832.

Caeoma hypodytes Schlecht., F. Berol., vol. 2, p. 129, 1824.

Ustilago Sporoboli Ell et Ev., Bull. Torr. Bot. Club, vol. 24, p. 282, 1897. U. funalis Ell. et Ev., l.c., p. 457.

Sorosporium Williamsii Griff., Ibid., vol. 29, p. 296, 1902.

Sori enveloping internodes, developing progressively from the base upwards, at first enclosed by the leaf-sheaths, otherwise naked, at maturity olivaceous and pulverulent.

Spores subglobose, elliptical or irregular, often guttulate, 4–7.5 mmm; epispore perfectly smooth, olivaceous, 0.5 mmm. thick.

Host: Agropyron repens Beauv. On internodes.

Distribution: Britain; Europe; Asia; Africa; North and South America; New Zealand.

Windsor, North Otago, Dec. 1925, J. C. Neill; F. E. Ward!

The species forms long sori, often extending the whole length of the internode, covering it completely with the olivaceous, pulverulent spore mass. It is readily recognised on this account, being the only species present in New Zealand attacking this part of the host. It is absent from the inflorescences.

This is the first record of this smut from Australasia, but it would appear to be abundant in Europe and North America, where it has been recorded on numerous species and genera of the Gramineae.

Additional Uredinaceous Hosts.

Uredo Scirpi-nodosi McAlp. (T.N.Z.I., vol. 55, p. 42, 1924).

Host: Scirpus sulcatus Thouars.

Te Kuiti, Auckland, Dec. 1905, D. Petrie!

The writer is indebted to Mr. E. H. Atkinson for bringing this host to his notice. It was in a collection made by the late Dr. D. Petrie, now in the herbarium of the Biological Laboratory, Dept. of Agriculture.

Accidium otagense Linds. (l.c., p. 33.)

Host: Clematis foetida Raoul. (Juvenile form).

Feilding. Wellington, Dec. 1925, H. H. Allan!

In this collection the rust has produced only slight inflations, up to 2.5 cm. long, on the stems, the large inflations, so characteristic of this species on Clematis indivisa, being absent.