In the Hon. Walter Rothschild's beautiful collection of New Zealand birds at Tring Park there are two partial albinoes of this species. They are male and female. The former has the crown of the head, face, throat, and an irregular narrow stripe down the fore-neck dull greyish-white; on the shoulder, breast, and back there are likewise a few scattered +Ieathers of pure-white. The female, which is an exceptionally large specimen, has a broad, irregular, transverse band of yellowish-white on the under-part of the body; rest of the plumage normal. From a fresh specimen I obtained the following measurements:—Adult ♀ Length, to end of tail 29in., to end of outstretched legs 41in.; culmen, from anterior edge of cere to the tip, 5.25in.; along the edge of lower mandible, from the angle of the mouth, 6.25in.; tarsus, 3.50in.; middle toe and claw, 3.50in. (the claw being 1 in.); hallux, 0.75in.; median circumference of tarsus, 2.50in.; circumference at junction of phalanges, 4.25in.; humerus, 2in.; cubitus, 1.50in.; spur, 0.25in.

Art. XI.—On the Fissures and Caves at the Castle Rocks, Southland; with a Description of the Remains of the Existing and Extinct Birds found in them. By A. Hamilton. [Read before the Otago Institute, 10th May, 1892.] Plates VII., VIII. A few miles south of Lumsden, on the right bank of the Oreti River, Southland, an outcrop of limestone occurs at a place called the Castle Rocks. Here denudation has exposed the beds of limestone, which are tilted at a high angle, and huge masses of rock have become detached, and have fallen, slipped, or rolled to a resting-place on the spurs of the steep hillsides or down to the valley beneath. The enormous size of the blocks, and the confusion in which they are piled, recalls many a memory of ancient and picturesque ruins on historic sites. In this part of the world we are but now making history, and comparatively little of Nature's record of past centuries has yet been read. Hidden in these Castle Rocks my friend Mr. Mitchell and I have been privileged to find a very interesting, even if still imperfect, chapter of the unwritten record of the past. For convenience I shall use the first person in writing these notes; but it must be understood that Mr. Barnhill, of the