Paraleptamphopus subterraneus (Chilton).

Calliope subterranea, Chilton. in N.Z. Journ. Sci., vol. i, p. 44, and Trans. N.Z. Inst., vol. xiv, p. 177, pl. ix, figs. 1–10 (1882). Calliopius subterraneus, Chilton in Trans. Linn. Soc. London, ser. 2, vol. vi, p. 234, pl. xxiii, figs. 10–18 (1894). Paraleptamphopus subterraneus, Hutton in Index Faunae N.Z., p. 259 (1904). Paraleptamphopus subterraneus, Chilton in P.Z.S. London, 1906, p. 704 (1906). Paraleptamphopus subterraneus, Stebbing'in “Das Tierreich Amphipoda,” p. 294 (1906).

This species was first described in 1882 from the underground waters at Eyreton, in North Canterbury, and was afterwards obtained from similar situations in Lincoln and Ashburton, and at Winchester, in South Canterbury. I have also two specimens from an artesian at St. Albans, Christchurch, depth probably not more than 70 ft.; collected by Mr. J. B. Mayne. In November, 1903, Dr. Cookayne brought me a few specimens, obtained in a surface stream near the River Porter, at Castle Hill, Canterbury; and a month or two later I myself obtained numerous specimens from the same locality. These specimens were quite colourless, showed no trace of eyes, and in these and in all other respects closely resembled the subterranean forms. They were found in a small stream issuing from a spring in the side of one of the river-terraces of the River Porter, and I afterwards also found them in other streams about two miles distant on the other side of the river. Later on the species was taken by Messrs. Lucas and Hodgkin in their investigation of the fresh-water lakes of New Zealand. Among their collections which were submitted to me for examination there was one specimen obtained from Lake Wakatipu (no depth mentioned) in Otago, and one from Lake Taupo, at a depth of 700 ft., in the North Island. These specimens seem to be practically identical with the subterranean forms first described. About