Genus Pentapus
1 a. canines on both upper and lower jaws. ...................2
1 b. Canines on upper jaw only; caudal lobes not produceed; a broad yellow band from behind of eyo to caudal.....E.microdon
2a. Canines in lower jaw strong, almost horizontal,directed outwards and curved backwards; silvery longitudinal stripes.......P. caninus