1278 
Analysis of species 
sT". G-nathonotacanthus new subgenus. Pectoral 
reaches 3 1/2 to 4 times to ventral; max¬ 
illary reaches eye. 
b 1 . Pectoral 3 1/2 to ventral. challengerl. 
b . Pectoral small, reaches 4 to ventral. 
vaillanti 
. Polyacanthonotus . Pectoral reaches 1/2 to 
ventral; maxillary reaches 3/4 to eye. 
rlssoanus. 
G-nathonotacanthus new subgenus. Type Polyacanthonotus 
vaillanti new species. Maxillary reaches eye. Pectoral 
reaches 3 1/2 to 4 times to ventral. 
( Yv^6°3 jaw; 
Notacanthus. ) 
