This little collection was sent to the Leyden Museum January 20th 1925 by Dr. F. Kopstein, who collected it on the isles Ambon, Haroekoe and Boeroe during 1922 and 1923. It contains the following species: Lutjanus argentimaculatus (Forsk.). Lutjanus argentimaculatus Bleeker Atl. Ichth. VIII, p. 74. Lutjanus argentimaculatus M. Weber Siboga Exp. Fische 1913, p. 252. 1 specimen 83/4 cm. Wae Memi Haroekoe Dec. 1923. Ambassis buruensis Blkr. Ambassis buruensis Bleeker Nat. Tijdschr. Ned. Ind. XI, 1856, p. 396. Ambassis buroënsis Bleeker Atl. Ichth. VIII, p. 137. Ambassis buruensis M. Weber & de Beaufort Fishes indo-austr. Arch. V, 1929, p. 417. 8 specimens 5—73/4 cm. Wae Hatoe, Ambon Hitoe Febr. 1923. 1 specimen 4 cm. Ajer Larike, Ambon Hitoe March 17th 1923. 4 specimens 572—71/4 cm. Wae Memi, Haroekoe Dec. 1923. Ambassis urotaenia Blkr. Ambassis urotaenia Bleeker Nat. Tijdschr. Ned. Ind. III, 1852, p. 257 Atl. Ichth. VIII, p. 135. Ambassis urotaenia M. Weber & de Beaufort Fishes indo-austr. Arch. V, 1929, p. 404. 5 specimens 5—6 cm. Wae Hatoe, Ambon Hitoe Febr. 1923. Apogon spec. 1 specimen 4 cm. with prey; bay of Ambon March 1922 without any trace of scales.