Gill-opening ventral, larger than eye, and almost confluent each other at the surface of throat. Anus notably forward of mid-body, total length 3.7 times of preanal length. Head measured from tip of snout to anteriormost point of gill-opening 1/10〜1/8 of total length. Pectoral longer than snout. Dorsal fin originates about a head length behind anus. Lateral line distinct, each pore with tube. Number of preanal lateral line pores 28〜29. Scales oval and cover all the surface of body except lower jaw and snout (Fig.).
Distribution:
Gulf of Mexico, and Indo-Pacific. Off Suriname.
Remarks:
Additional 2 species of the genus are reported from the Atlantic. S. kaupii is characterized by the elongated scales arranged at right angles to one another, and S. oregoni has small gill-opening equal to half of eye (Castle, 1960). (Uyeno and Sasaki)