(Family):Body depressed. Ventral surface markedly flattened. Tail stout, distinct from the disc. (Genus):Ventral surface of body completely covered with scale. Pectoral fin lobe separated from tail. Disc subtriangular in outline. Subopercular spine absent. No lateral-line pores on ventral surface of tail. Teeth present on jaws, tongue, palatine, and vomer. Gill rakers in the form of oval plate covered with small denticles, present on all 4 arches. Single row of tubercle-like scales between anus and anal fin orgin. Pectoral fin rays 10〜11. Tip of pectoral and caudal fins rays black distally, bases transparent or translucent. Tubercle on disc and tail rough and spinous. Mouth small, subequal to eye diameter. Rostrum short, 0.9〜1.6 of head depth.
Distribution:
In the western Atlantic, this species is known from South Carolina to Brazil, except from western Gulf of Mexico (Bradbury, 1980).
Remarks:
This species differs from other species of the genus in its rough, craggy tubercles on dorsal surface of disc and tail. (Uyeno and Aizawa)