. Bulletin - United States National Museum. Science. FISHES OF THE PHOENIX AND SAMOAN ISLANDS 243 anus ; longest spine (second) of dorsal fin ; longest (fifth or sixth) soft ray of dorsal fin ; longest (ninth) soft ray of anal fin ; longest ray of caudal fin ; longest ray of pectoral fin ; longest ray of pelvic fin ; length of first dorsal spine ; length of spine at front of soft dorsal fin Dorsal fin rays VI-1,10; anal I, 10; pectoral 18; pelvic I, 5; number of scale rows from gill opening to base of caudal fin 28; scales along midline of back in front of
. Bulletin - United States National Museum. Science. FISHES OF THE PHOENIX AND SAMOAN ISLANDS 243 anus ; longest spine (second) of dorsal fin ; longest (fifth or sixth) soft ray of dorsal fin ; longest (ninth) soft ray of anal fin ; longest ray of caudal fin ; longest ray of pectoral fin ; longest ray of pelvic fin ; length of first dorsal spine ; length of spine at front of soft dorsal fin Dorsal fin rays VI-1,10; anal I, 10; pectoral 18; pelvic I, 5; number of scale rows from gill opening to base of caudal fin 28; scales along midline of back in front of dorssal fin 10; number of scales in the transverse row from front of dorsal to anal fin 8. Color in alcohol, pale with fine pigment spots along midaxis of body and an additional one basally on caudal fin rays; upper sides. Figure 21.—Oplopomus diacanthus, new species: Holotype (U. S. N. M. No. 116116), mm. in standard length. with scattered patches of pigment cells; gill membranes white; pec- torals white; body with several areas of silvery white, rather large ventrally but small dorsally; below eye an oblique color bar and another across opercle; three tiny patches of pigment in line from front of eye to tip of snout; interorbital with a few pigment cells. Gill membranes broadly joined to isthmus, the gill opening not restricted to in front of the base of pectoral fin; cheeks and opercles naked; midline of back in front of dorsal and sides of nape scaled to eyes; breast scaly; abdomen scaled; base of pectorals scaled; scales ctenoid; mouth somewhat oblique, the maxillaries reaching to below front of eye; tongue truncate; teeth in upper and lower jaws conical and arranged more or less in a villiform band with the outer ones on the lower jaw rather strong and hooked forward; no cutaneous flaps on shoulder girdle; interorbital space very narrow; anterior nostril tubular; basal membrane well developed with the usual lobes then a notch just before it joins the pelvic rays;
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
