V,1 
“ . Male with fourth dorsal ray 
moderately extended, 
scarcely thickened, not 
reaching hind edge of fin; 
^ / 
anal with median lobe longer 
than hind lobe and front 
lobe greatly shortest.---- 
- ^Izner^ 
,2 
ii . Male with fourth dorsal ray 
greatly prolonged and 
thickened, reaches to or 
beyond.hind end of fin; 
anal lobes 3, subequal.- 
•- --rphilippinus. 
d , Fifth dorsal ray prolonged to tip of 
last dorsal ray.-basudensis. 
Labidorhamphus. Triangular part of upper 
jaw Ig to 2 or more times longer than 
broad; anal rays 11 to 13. 
i . Dorsal rays uniform; male 
with sixth anal ray 
expanded and apparently 
longest. - 
-caudovittatus. 
