Note on the Movement of Waste on Screes in the Orongo-rongo District, near Wellington. By Greta B. Stevenson, Messines Road, Karori, Wellington. [Read before Wellington Branch, September 27, 1944: received by the Editor, September 28, 1944; issued separately, March, 1945.] Summary. Observations and measurements of banded screes in this district indicate that stone stripes are produced by the removal of fine waste by parallel, subsurface streams. A comparison is drawn between erosion on the screes and erosion in arid and semi-arid climates on the basis that in both cases there is a great excess of loose waste material, so that the flowing water acts as a transporting agent only, and does not directly shape the landscape. A further example of a land form shaped by weathering of the rock and the transportation of the resulting waste by water is pointed in the case of convex hills. On the hills forming the eastern side of the Orongorongo River Valley numerous landslides have occurred. The scars of many are still visible from Wellington. Wherever the slump scarp has exposed the shattered greywacke of which a large part of the top of the hills is composed, long and wide screes have developed. Some are about 300 m. in vertical height and about 0.75 km. in width. In other places, landslides have exposed fault pug and brecciated rock in which extensive gullying has taken place, with the consequent development beneath the scarp of fans of rubble and clay. The screes in the Wellington waterworks area have been studied by the writer during the years 1941–44. It has been found that the screes typically show marked, longitudinal striping. Bands of coarse boulders, averaging roughly 0.3 m. in diameter, alternate with bands of smaller stones, averaging roughly 0.1 m. in diameter. The bands on any one scree may be approximately the same width or the bands of larger stones may be narrower than the bands of smaller stones. The bands are from 1 to 3 m. wide. The smaller screes may present a flat surface from side to side but the larger screes tend to be domed slightly between a point on one side and a point of the same altitude on the opposite side. In places the bands of larger stones lie in perceptible dips, forming very shallow, parallel gullies. Between the mouth of the Orongorongo River and the mouth of the Mukumuku there are a number of small shingle slips on the slopes rising from the coast. These slips probably owe their origin, in part, to the weakening or destruction of the vegetative cover by burning and overgrazing and the subsequent exposure of the shattered greywacke, which very readily forms screes. Here also is shown the same banding of large and small stones. One small, shallow scree which runs through a grove of isolated trees was seen in October, 1941, with driftwood scattered down the stripes of large stones.