Charleston, Westland, coast, 2,/28. G.H.C. Cape Foulwind, Westland, coast, 2/28. G.H.C.<

II. Uredosori hypophyllous, seated on discoloured spots, orbicular, 0.5-2 mm. diam., scattered or more regularly arranged in circinnate groups, erumpent, orange, fading to pallid ochraceous, surrounded by the ruptured epidermis. Spores subglobose, 16-20 mmm. diameter; epispore hyaline, 3-3.5 mmm. thick, moderately and finely verruculose; germ pores 6-8, scattered, obscure; immixed with numerous, hyaline, capitate paraphyses, swollen at the apex to 24 mmm.
III. Unknown.

The host is indigenous and fairly widely spread from the North Cape southwards; it extends also to Norfolk Island (Cheesem. 1925, p. 542).
Although only uredospores are present on the abundant specimens at hand, the plant is obviously a Melampsora; the inflated hyaline paraphyses, and type of spores being typical of this genus. As several species have been recorded as occurring on Euphorbia elsewhere, and as it is not possible to refer this to any one of these on account of their general similarity in the uredostage, it has been provisionally described as new, until such time as the teleutospores are collected.

Euphorbia glauca Forst. f. Seal Rock, Brighton, Westland, coast, 2/28. G.H.C. Type.

The host of this endemic rust is indigenous to New Zealand and occurs also on Norfolk Island (Allan, 1961). The rust is common in New Zealand wherever the host grows.