4a. Both lobes of canudnl produced into a long filament; LI. 50-52; 17-18 scales below it; a second longitudinal band, between dorsal and lateral line.. P. nomurus
4b. Caudal lobes pointed, not produced.......................5
5a. Scales on lateral line 45, 16 scales below it: no socond yellow longitudinal bana between dorsal and lateral line.....P. macrurus
5b. Scales on lateral line 49, 13 scales below it: no second yellow longitudinal band between dorsal and lateral line; conines in lower jaw small.................P. hellimuthi