190 U.S. NATIONAL MUSEUM BULLETIN 202 Vol. 2 



the blotches are roundish. Black spots between first to third spines 

 in dorsal fin and a smaller blackish spot near base of third to fourth 

 soft dorsal rays in specimens 40 mm. and shorter; dorsal and anal 

 fins with a pale or dusky streak near middle of fins; tips of pectorals 

 usually dusky; caudal and pelvics plain pale. 



Color when alive. — Background coloration light green. Dorsal and 

 anal fins with a lengthwise green band through middle of fins. 



THALASSOMA LUTESCENS (Lay and Bennett) 



Figure lOO.D; Plate 107,B 



Julis lutescens Lay and Bennett, Fishes, in Zoology of Captain Beechej^'s voyage, 



p. 65, pi. 19, fig. 2, 1839 (type locality, Tahiti and Riu Kiu Islands). 

 Julis aneitense GtJNTHER, Catalogue of the fishes in the British Museum, vol. 4, 



p. 183, 1862 (type locality, Aneiteum, Ceto Islaud, northeast Australia, 



Norfolk Island). 

 Julis anertensis Seale, Occ. Pap. Bishop Museum, vol. 1, No. 3, p. 90, 1901 



(Guam; misspelling for aneitensis). 

 Thalassoma neanis Jordan and Snyder, Bull. U. S. Bur. Fish., vol, 26 (1906), 



p. 14, pi. 12, fig. 2, 1907 (type locality, Honolulu, holotype, USNM No. 57785). 



SPECIMENS STUDIED 



Bikini Atoll: 18 stations, 78 specimens, 14 to 132 mm. in standard length. 



Eniwetok Atoll: 1 station, 5 specimens, 66 to 123 mm. 



Rongerik Atoll: 3 stations, 6 specimens, 23 to 63 mm. 



Rongelap Atoll: 10 stations, 55 specimens, 30 to 100 mm. 



Kwajalein Atoll: 1 station, 1 specimen, 41 mm. 



Northern Marshall Islands: 1 lot, 15 specimens, 44 to 89 mm. 



liikiep Atoll: 1 lot, Univ. Washington, 12 specimens, 41 to 76 mm. 



Description. — Certain counts are recorded in table 101. Head 2.9 

 to 3.2; greatest depth 3.1 to 3.3; longest pectoral ray 4.0 to 4.8; 

 snout tip to anus 1.7 to 1.8; snout to dorsal origin 2.7 to 2.9; all in 

 standard length. Snout 2.9 to 3.2; eye 4.0 to 6.5; postorbital length 

 of head 1.9 to 2.1; interorbital space 4.2 to 4.6; longest pectoral ray 

 1.4 to 1.7; least depth of body 2,1 to 2.2; all in length of head. 

 Distance between anterior and posterior nasal openings 4.0 to 6.0 in 

 snout. Eye 0.8 to 1.5 in interorbital space. 



Pectoral fin reaches to opposite about ninth lateral line scale; 

 pelvics reach a little over halfway to anus; outer caudal rays elongate 

 on adults; distal margin of caudal fin in young convex, becoming 

 concave and even forked in adults. 



Color in alcohol. — Background light brownish to light yellowish; 

 head with 4 or 5 dusky streaks separated by wider pale interspaces; 

 pelvics whitish; pectoral fin mth blackish blotch, except in young 

 specimens; dorsal edge of pectoral base with dusky spot; dorsal fin 

 with dusky streak basally, distal half whitish; anal fin with dusky 

 streak in basal fifth, distal four-fifths whitish; caudal fin lighter in 

 color than body; each scale with a narrow dusky to brownish vertical 



