94 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



East Indies, China, Melanesia. I overlooked Giinther's record 

 for the Loiiisiades and therefore failed to include this species in my 

 " Fishes of Oceania." According to Bleeker, it is known by the yellow 

 bands on dorsals and anals, also median lateral band, caudal not 

 prolonged in filament and mandibular teeth strong and few. 



SYNAGRIS FLAVIVENTRIS (Steindachner) 



Heterognalhodon flaviventris Steindachner, Verh. zool. bot. Ges. Wien, vol. 16, 

 p. 778, pi. 13, fig. 6, 1866 (type locality: Zanzibar). 



Depth 2% to 2%; head 2% to 2%, width 2% to 2%. Snout 3 to 

 3Ko in head from snout tip; eye 4 to 4%, 1% in snout, greater than 

 interorbital ; maxillary reaches % in eye, expansion 2% to 2% in eye, 

 length 2% to 2% in head from snout tip; teeth fine, in bands in jaws 

 of 5 to 7 irregular rows with outermost row little enlarged though 

 less so below; interorbital 5 to 5K, but slightly elevated and flattened 

 medially; hind preopercle edge very minutely serrated above corner, 

 lower edge nearly or quite entire; broad preopercle and preorbital 

 flanges with marginal venules. Gill rakers 6 + 9, short points, Ys of 

 gill filaments, which 1% in eye. 



Tubular scales 41 to 44 in lateral line to caudal base and 1 or 2 

 more on latter; 4 above, 11 below, 12 to 14 predorsal extend forward 

 opposite eye center, 3 rows on cheek with preopercle flange broadly 

 naked. Suprascapula denticulated. Scales with 8 basal radiating 

 striae; 96 to 100 apical denticles, small, weak, with 1 or 2 transverse 

 series of small basal elements; circuli verj^ fine. 



D. X, 9, I, fourth spine 2% to 2% in total head length, seventh 

 ray 1% to 1%; A. Ill, 7, i, third spine 2% to 3, sixth ray 1% to V/io; 

 least depth of caudal peduncle 3 to Z%; pectoral iKo to Iji; ventral 

 1% to 1%; lower caudal lobe 1% to Iji, fin feebly emarginate, upper 

 lobe extended in long filament until 1% in combined head and body 

 to caudal base. 



Back light brown, sides and below whitish with sulphur-yellow 

 tints and whole body overshot with silvery. Iris yellowish. Back 

 likely with reddish tinge when fresh as pinkish tints remain. On 

 body, especially on flanks above, traces of obscure narrow whitish 

 streaks or bands, one along intersections of each row of scales. 

 Inside gill opening yellowish submarginally, greater area reddish. 

 Fins largely pale or transparent brown white. Entire length of 

 dorsals basally broad bright sulphur-yellow band, also margin of 

 spinous fin narrowly sulphur-yellow. Anal with subbasal longitudi- 

 nal narrow yellow band and with several others less distinct or 

 extensive, parallel out on fin. Ventral with axillar}^ scale and base 

 of fin bright sulphur-yellov.\ Caudal filament sulphur-yellow. 



Known previously only from Zanzibar. The broad sulphur-yellow 

 basal band on the dorsal fin and the long filament of the upper 

 caudal lobe of same color are characteristic. As the species is little 



