» 
Hemlpterols . Upper group of pectoral rays 6 
or more; lower caudal edge not notched; 
outer ventral and lower caudal rays strong¬ 
ly produced. 
► 
g 1 . Two upper rays of upper pectoral 
group detached, rigid and enor¬ 
mously produced; anal origin 
just behind end of.dorsal. 
guntheri. 
2 m ^ 
g . Two upper pectoral rays rudimen¬ 
tary or absent, all in upper 
group united by stout fin mem¬ 
brane and none reaching past 
dorsal; ana}, origin under mid¬ 
dle of dorsal fin base. 
viridescens. 
