Metopella ovata Stebbing, 1906, p. 183; Chilton, 1912, p. 481.

I have two small specimens from Brighton, Otago, which I refer to this species. One is a female, about 3 mm. in length, and agrees closely with Stebbing's description and figures; it has the palm of the second gnathopod transverse, and that of the first nearly so; in these respects it agrees with the South Orkneys specimens that I referred to M. ovata in 1912, with one of which I have been able to compare it. The other Brighton specimen, taken at approximately the same time, shows no brood-plates or other distinctive marks of sex, and is possibly a male; in it the palms of both gnathopods are much more oblique; it agrees so closely in all other respects that I think it must be considered as belonging to the same species.

In both specimens, which have been stained with eosine and mounted in Canada balsam as micro-slides, certain structures which appear to be of a glandular nature have been deeply stained in the side-plates and other parts of the body but not in the appendages; these show as groups of small round bodies with straight ducts leading towards the margin of the side-plate. They appear to be similar to the structures figured by Stebbing (1891, pl. 1, prp. 4) in the basal joint of the fourth peraeopod of Urothoe elegans, though I cannot find that these are referred to in his text.

Metopella ovata is now known from the South Orkneys, the Strait of Magellan, and from New Zealand.

Paracalliope fluviatilis (G. M. Thomson).

Calliope fluviatilis G. M. Thomson, 1879, p. 240, pl. x, c, fig. 4 a-c. Pherusa australis Haswell, 1880, p. 103, pl. 7, fig. 1. Paracalliope fluviatilis Chilton, 1909, p. 55; 1920, p. 513; 1921, p. 529.

This species is the one commonly found in fresh-water streams throughout the whole of New Zealand. I have numerous specimens from fresh water at Cape Maria van Diemen, sent me by Mr. T. B. Smith, and have collected the species myself in various streams in Southland and at many intermediate stations. As has already been pointed out, the species is, however, capable of living in brackish and even in quite salt water, occurring in Dunedin Harbour, and also in Auckland Harbour, whence I have two specimens collected near the Puhoe Beacon.

In the Amphipoda of Chilka Lake, on the east coast of Bengal, which I have recently been examining, this species was represented by numerous specimens from different parts of the lake, and there were also specimens from Adyar River, from the outskirts of the city of Madras. Specimens sent from Nasugbu, south coast of Luzon, Philippine Islands, by Professor C. F. Baker, also proved to belong to this species, though the character of the water in which they were living in the Philippine Islands was not recorded. I have little doubt that Mr. Stebbing is right in suggesting that Pherusa australis Haswell from the east coast of Australia also belongs to this species, though I have been unable as yet to obtain specimens for comparison, and the type of Haswell's species is not available. I have described and figured the species in some detail in my report on the Chilka Lake Amphipoda. It is readily recognized by the peculiar inverted character of the second gnathopods and by the greatly elongated fifth peraeopods.

The existence of this species in fresh and brackish water in India, Philippine Islands, Australia, and New Zealand is of importance from the point of view of geographical distribution.