. Bulletin - United States National Museum. Science. FAMILY PSEUDOCHROMIDAE—SCHULTZ 405 ent; gill rakers short; anterior nostril a short tube, separated from posterior one by a dermal isthmus; no serrations on operculum; pre- maxillaries protractile; lower jaw same length as upper, not projecting. Color in alcohol.—^Head, body, and fins light brown; upper part of opercle with a black ocellate spot; tip of fleshy keel under lower jaw with margins blackish; orbit posteriorly with a narrow blackish line. Ecology.—This species was taken only from the lagoon reefs. Remarks.—From all other species o
. Bulletin - United States National Museum. Science. FAMILY PSEUDOCHROMIDAE—SCHULTZ 405 ent; gill rakers short; anterior nostril a short tube, separated from posterior one by a dermal isthmus; no serrations on operculum; pre- maxillaries protractile; lower jaw same length as upper, not projecting. Color in alcohol.—^Head, body, and fins light brown; upper part of opercle with a black ocellate spot; tip of fleshy keel under lower jaw with margins blackish; orbit posteriorly with a narrow blackish line. Ecology.—This species was taken only from the lagoon reefs. Remarks.—From all other species of pseudochromids Pseudo- plesiops revellei may be distinguished by the lack of spines in the median fins combined with the fleshy keel on the under side of the lower jaw, and from all other species referred to Pseudoplesiops by the possession of a black spot on the operculum. Named revellei in. Figure 66.—Holotype of Pseudoplesiops revellei, new species ( No. 140696), from Bikini Atoll. (Drawing by Dorothea B. Schultz.) honor of Commander Roger Revelle, U. S. N. E., who was in charge of oceanographic studies during Operation Crossroads and the Bikini Scientific PSEUDOPLESIOPS SARGENTI. new species Figure 67 Pseudoplesiops tijpus (not of Bleeker) Fowlee, U. S. Nat. Mus. Bull. 100, vol. 11, p. 42, 1931 (all Philippine specimens). Holotype.—^ No. 140683, a specimen mm. in standard length, from Bikini Atoll, coral heads eastern end of lagoon, depth 20 to 25 feet, March 26,1946, S-46-42, Brock and Schultz. Paratypes.—'N.' 140684, Rongelap Atoll, Tufa Island, depth 28 feet, July 28, 1946, S-46-300, Herald and Brock, 1 specimen, mm; Likiep Atoll, Likiep Island, August 20,1949, Univ. Washington, 1 specimen, 37 mm. The following paratypes are all from the Philip- pine Islands, collected by the Aloatross: No. 146515, Cara- caran Bay, Batan Island, June 8, 1909; No. 146516, En- deavor Straits, December 23,1908; U.
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