6 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



ANALYSIS OF SPECIES 



a>. Lethrinella. Snout extremely long and pointed; maxillary but halfway 



to eye; young with black blotch behind gill opening miniatus. 



o2. Snout moderate, not greatly elongated; maxillary more than halfway in 

 snout. 

 6'. Lethrinichthys. Second dorsal spine longest, filiform; black blotch 



behind gill opening nematacanthus. 



b^. Lethrinus. Second dorsal spine not elongated, 

 c'. Black lateral blotch present on body. 



dK Ten or eleven dark vertical bands, broken axially; small round black 



spot above middle of pectoral; body slender amboinensis. 



cP. Vertical bands when present not as above. 

 eK No dark vertical band on cheek. 

 /'. Dark lateral blotch persistent. 



gK No whitish median axial line on body. 



hK Black lateral blotch variable from behind gill opening to 



above hind part of pectoral hypselopterus. 



h-. Black blotch behind pectoral end; dark vertical bars varia- 

 ble, reticulate; body rather slender reticulatus. 



h^. Large black blotch at pectoral end harak. 



h'*. Large black blotch above middle of pectoral atkinsoni. 



hP. Small black blotch before middle of pectoral frenatus, 



g^. Usuallj' more or less complete median whitish axial line and 



several others above and below kallopterus. 



p. Dark lateral blotch fading with age; each scale with white 



spot nebulosus. 



e^. Dark vertical band on cheek; body rather slender. 



i'. Dark vertical band on cheek variegatus. 



i^. Broad dark vertical band on cheek; another on pre- 



opercle genivittatus. 



e^. Dark vertical band on cheek; body deeper punctulatus. 



c^. No black lateral blotch on body. 



j'. Second dorsal spine not longer than others. 

 k\ No black spot on temple, 

 i'. Snout moderate. 



m'. No bluish streaks before eye. 



n^. No oblique green bands on cheek. 



o'. Head not darker, nor greatly contrasted 

 with body. 

 pK No longitudinal bauds on body; anal 

 longer than high; 5 scales above lateral 

 line, 

 g'. Each scale of body with white, golden, 

 or dark spot, 

 r'. Depth 2}^ to 2%___ haematopterus. 



r^. Depth 2% choerorhynchus. 



r3. Depth 2% mahsenoides. 



q^. Each scale of back with black vertical 

 basal streak; depth 2}^. 



chrysostomus. 



