Pavonia repens, Bruggemann.

Lophoseris repens, Bruggemann, Abhandl. naturw. vereins zu Bremen, v., p. 395, pl. vii., fig. 1, a-b.

Pavonia repens, Klunzinger, Korall. Rothen. Meeres, 1879, p. 75, pl. ix., fig. 3.

Three specimens.

Obtained by a native diver in twenty feet of water in the lagoon.

Colour dull dark brown.

Pavonia explanulata, Lam.

Pavonia explanulata, Lam., Anim. sans Vert., ii., 1816, p. 244; Edwards & Haime, Hist. Nat. Corall., iii., p. 69, pl. d 11, fig. 2.

Two small incrusting specimens were obtained in the lagoon.

Psammocora Fossata, Dana,

Psammocora fossata, Dana, Zoophytes, U.S. Explor. Exped., p. 347, pl. xxvi., figs. 2, 2a.

Two specimens: one explanate, convex, with a large free epithe-cate margin exhibiting concentric lines of growth on the lower surface; the other a roll-like form incrusting a dead piece of coral. The meandering calicine valleys are mostly short, containing from two to six calicles; near the margins of the corallum as many as twelve may be found in one valley.

The ridges are rounded, and somewhat strongly echinulate. The septa vary in number from twelve to thirty-six; their summits are thick and echinulate. The echinulæ are arranged transversely in subquadrate groups, about 0·2 mm. apart at the apex.

The columella is small, and consists of a few spiniform granules.

Obtained in the lagoon.

Psammocora contigua, Esper.

Madrepora contigua, Esper, Die Pflanz., i., 1797, Suppl., p. 81, pl. lxvi.

Psammocora plicata, Dana, Zoophytes, U.S. Explor. Exped., p. 346, pl;. xxv., fig. 2.

Two fine specimens of this species were obtained at low tide mark on the western side of the atoll.

Oxypora, sp.

A small fragment was obtained in from forty to seventy fathoms outside the atoll. Its condition, however, is such as to preclude the possibility of specific identification.

Fungia Tenuidens, Quelch.

Fungia tenuidens, Quelch, Chall. Rep., Zool., xvi., p. 138, pl. vi., fig. 1.

One example, similar in size, shape, and general characters to the specimen figured in the "Challenger" Report.

Occurring on the western side of the atoll.

Fungia discus, Dana.

Fungia discus, Dana, Zoophytes, U.S. Explor. Exped., p. 291, pl. xviii., fig. 3.

A single beach-worn example is referable to this species.

Western side of the atoll.