216 U.S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 2 



Body a little compressed; dorsal profile rounded, forming an angle 

 of about 60 degrees with ventral contour of head; teeth uniserial, 

 compressed, incisorlike, short, about 7 or 8 on each side of upper jaw 

 and 8 or 9 on lower; no enlarged or caninelike teeth anteriorly in jaws; 

 jiectoral fin reaches to opposite about 11th pore of lateral hne; second 

 branched ray from dorsal edge of pectoral fin longest; caudal fin 

 rounded posteriorly. 



Color in alcohol. — Background coloration on back and upper sides 

 grayish brown or blackish, sharply contrasting with light grayish 

 white ventrally and separated from it by a white streak along middle 

 of sides. The paired white streaks, usually edged with a dark line, 

 are located as follows: A white streak (1) beginning at dorsal edge 

 of eye and extending toward nape, thence posteriorly on each side 

 of middorsal line, along base of dorsal fin, this streak may be indistinct 

 depending on preservation; another (2) beginning in middle of snout 

 near middorsal line and extending to front of eye, beginning again on 

 posterior side of eye, whence it slants dorsally then continues in a 

 straight course posteriorly, passing over upper edge of gill opening, 

 and continuing just below pores of lateral Hne, to end on the fourth 

 or fifth scale behind upper edge of gill opening; another (3) beginning 

 near middle of front edge of preorbital, passing just under lower edge 

 of eye, across opercle, along dorsal edge of white area just above 

 pectoral base, and thence slanting a little ventrally behind pectoral, 

 to end on a vertical line passing through the 10th or 11th lateral line 

 scale; another (4) beginning on under side of head a little behind the 

 chin, curving dorsally just behind rear corner of mouth, thence across 

 cheek and curving ventrally across lower tip of opercle, continuing 

 dorsally along scaled edge of cleithrum, ending at front edge of pec- 

 toral base, and commencing again in axil of pectoral, then curving 

 downward a little one scale row below white streak (3) and continuing 

 a straight course to base of caudal fin just below lateral line pores. 



Color when alive. — The streaks are bright blue, the first continues 

 to dorsal edge of caudal fin, the third continues on middle three rays 

 of caudal fin nearly to the tips of rays; area anterodorsally to pectoral 

 fin base bright red; eye orange; lips and front part of head orange; 

 dorsal fin pale orange; dorsal part of body grayish brown; lower sides 

 and belly pearly, tinged with light bluish. 



Ecology. — This species never occurred in abundance anywhere on 

 the reefs; it seemed to prefer the reefs where there were luxuriant 

 growths of algae and corals, and was frequently taken in the areas 

 where the waves were strongest. 



Remarks. — This new species has been confused with S. albovittata 

 by nearly all authors since Giinther first recognized it and gave it the 



