Art. XXIV.—Descriptions of New Species of New Zealand Land and Fresh-water Shells. By H. Suter. [Read before the Philosophical Institute of Canterbury, 7th November, 1889.] Plates XIV. and XV. Shortly after arrival in this beautiful colony, in January, 1887, I began to collect land and fresh-water shells, for a few weeks near Wellington, and afterwards, up to October of last year, in the southern part of the Forty-mile Bush. Since November, 1888, I have collected in the neighbourhood of the Mount Cook Hermitage. I have succeeded in finding a considerable number of new species, all, with a few exceptions, very small and scarce. This circumstance explains fully why they hitherto have been overlooked. In the following pages I wish to give the descriptions of all the new shells I found in the Forty-mile Bush, and of two from the Hermitage. Next winter I hope to be able to complete this paper by giving the descriptions of the animals, as far as they are known to me, their position in the system, and descriptions of some more new species found near the Hermitage. It is an agreeable duty for me to tender my best thanks to Professor F. W. Hutton, who from the very first assisted me so kindly, up to the present day, with his great knowledge in conchology. I have also to thank Professor A. Mousson, of Zürich, for his valuable communications on New Zealand Mollusca. Helix pseudoleioda, n. sp. Plate XIV., fig. 1, a—c. Shell small, globose, yellowish-white, banded with some-what backwards-directed brown streaks, faintly shining, closely ribbed, ribs on upper surface straight, a little undulating outside; ribs about 38 in the tenth of an inch (15 per mm.). Spire globosely elevated, less rounded at the base. Whorls 6, round, very slowly increasing, the last not descending. Suture pretty deep. Aperture lunately rounded, slightly oblique, excavated by the penultimate whorl. Peristome straight, not dilated, acute, margins distant, columellar margin slightly descending. Aperture with 12 laminæ—3 on the penultimate whorl, 1 on the columella, and 8 on the parietal wall. The lowest plait on the penultimate whorl is strongly developed; the plait on the columella also is relatively large, tongue-shaped; the laminæ on the parietal wall are fine, long, the four lower ones are more approached than the others. Umbilicus very narrow, deep, open.