198 BULLETIN 180, UNITED STATES NATIONAL MUSEUM 



Genus LABRICHTHYS Bleeker 



LabricMhys Bleekeb, Nat. Tijdschr. Ned.-Ind., vol. 6, p. 315, 1854. (Type, 

 Lahrichthys cyanotaenia Bleeker.) 



LABRICHTHYS CYANOTAENIA Bleeker 



LabricMhys cymiotaenia Bleeker, Nat. Tijdschr. Ned.-Ind., vol. 6, p. 331, isri4. 



52459, Apia, Samoa, Jordan and Kellogg, 3 i-pecimens. 

 '. 82762, Samoa, Wilkes Exploring Expedition, 1 specimen. 

 117706, Apia, Samoa, 1 specimen. 



Genus CHEILINUS Lacepede 



Cheilinus Lacept^de, Histoire naturelle des poissons, vol. 3, p. 529, 1802. (Type, 

 Cheilinus trilo'batus Lacepede.) 



KEY TO THE SPECIES REFERRED TO THE GENUS CHEILINUS, REPORTED FROM THE 

 PHOENIX AND SAMOAN ISLANDS 



la. Two narrow black bands extending from beliind eye nearly to rear of head, 

 another black band above eye, and a pair of black bands on yonng (joined 

 into a wide diffuse band on large adults) extending from below eye to a 

 point two-thirds the distance back along mouth ; posterior margin of caudal 

 fin paler; body greenish; tins with numerous black undulating transverse 



lines. (See table 20 for counts.) Cheilinus undulatus Riippell 



1&. Color not as in la. 

 2a. About 9 to 12 black lines extending downward and a little backward from 

 cheek and opercle to gill membranes ; upper scales with reddish spots, 



body mostly greenish above Cheilinus diagrammus (Lacepede) 



2b. Color not as in 2a. 

 3a. Body crossed with wide blackish bars and pale interspaces (sometimes 

 diffuse) ; head with a few black spots posteriorly or with a blackish 

 spot or two in midline of caudal peduncle. 

 4a. Posterior margin of caudal fin pale; sides of head in adults with 

 numerous short wavy red lines and spots (pale in alcohol) ; trans- 

 verse bars as follows: Blackish one across middle of caudal fin; 

 whitish one across base of caudal with a black spot at midaxis: 

 blackish one across caudal peduncle ; pale bar at end of soft dorsal 

 and anal, including the fins with blackish spot at midaxis of body; 

 blackish one across middle of body, then pale, then another blackish 

 one across spiny dorsal to pelvics with pale forward, diffuse blackish 



one through base of pectoral Cheilinus trilobatus Lacepede 



46. Posterior margin of caudal fin blackish ; then a transverse pale bar 

 with a wider blackish bar forward, base of caudal crossed with a 

 white bar; caudal peduncle crossed with a black bar; then five 

 black bars with narrow pale interspaces extending downward from 

 dorsal fin; upper rear part of head with a few black spots or 

 blotches; fine black spots forward and ventrally, most numerous 



below and under pectoral fin Cheilinus fasciatus (Bloch) 



36. No wide transverse blackish bars on body or caudal fin as in 3«. 



5a.. Body with numerous pale spots (reddish or bluish in life) ; head with 

 pale spots; body often with scattered blackish spots; dorsal spines 

 usually X, sometimes IX (see table 20) ; gill rakers about 6 or 

 7+6 or 7 Cheilinus chlorourus (Blocli) 



