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Triforis Corrugatus, Hinds.

Hinds, Ann. Mag. Nat.Hist., xi., 1843, p. 18; Hinds, Voy."Sulphur,"

Zool., pl. viii., fig. 12; Chenu., Man. Conch, 1859, p. 284, figs.

1915, 1916; Langkavel, Donum Bisuiarckianum, 1871, p. 26, pl. ii., fig. 6; Tryon, Man. Conch., ix., 1887, p. 189, pl. xxxix., fig. 59.

T. connatum, Montrouzier, Journ. Conch., x., 1862, p. 236, pl. ix., fig. 4.

A considerable series of specimens from various localities and a careful examination of the literature quoted, enable me to confidently unite Montrouzier's species with that of Hinds. It should be obvious to any student who compares the excellent figure in the Journal de Conchyliologie with the other illustrations that the immaturity of the New Caledonian example is the only point of difference. That this synonomy of so common and distinct a species should have so long escaped attention is another sad proof of the negligence of the authors who have dealt with this much abused genus. Reviewing the shells of Lifu, Melvill and Standen actually record the species first under one name and then under the other.^* Tryon has suggested T. bayani, Jousseaume, as a probable synonym, an idea which his figures seem to contradict. One of the specimens before me shows the protoconch to have a double keel, with a very narrow interstice.

The shallow water of the Funafuti lagoon yielded me several broken specimens. A wide range over the Pacific is indicated by the following records:—New Guinea (Belcher); Queensland, Torres Straits, (Brazier)^† and Cape Sidmouth, (Henn); Gilbert Islands (Garrett); New Caledonia, lie Art (Montrouzier); Oubatche and Noumea (Hedley); and Lifu (Hadfield).