median supra-occipital ridge; last minutely serrated; single 
infranasal spine each side; lower preopercle edge serrate, 
serrae gradually larger forward and hind edge entire, Rakers 
5 15, lanceolate, long at filaments or about half of eye, 
Shoulder-girdle inside gill-opening with upper knob greatly 
fongerethan lower. Scales all fallen, very small; breast 
naked, 
Third dorsal spine 1@ in head; second anal spine 2 1/5 
to 2g. Jn alcohol pale slaty-brown to leaden, with 7 or 
more darker vertical streaks, Lower half of body white, 
everywhere more or less silvery. Upper half of spinous dor- 
sal blacki oh. Other fins dilute yellowish-brown in fresh 
example, Lower fins pale, Eye Silvery, also perithoneumn, 
Hength 36 mm, Two from Singapore. We-also include a Su« 
matren example 35 mm. long in the Academy, 
CHETLODOEPTERIDAE ; | . 
Amia frenata (Valenciennes). 
Head 2 2/5 to 2 2/3; depth 2 2/3 to 33 D. VII - i, 3 
i; A. II, 8 or 9, 1; scales 24 to 28 in lateral line to 
caudal base and 4 more on latter; 2 or 3 scales above let- 
eral line to spinous dorsal origin, 6 or 7 below; predor- 
sal scales 5; snout 3 2/5 to 3 2/3 in heed from upper jaw 
tip; eye 3 to 3 1/3; maxillary jaw tip; eye 3 to 3 1/3; 
maxillary 1 4/5 to 2 1/6; interorbital 3% to 42. 
