_Mycteroperca microlepis._ The Gag. Body comparatively elongate and compressed; head 2-1/2; depth 3-1/2; eye 6; D. XI, 16 to 19; A. III, 11; scales 24-140-50; pores about 90; dorsal fin single, its spines slender and weak; head long and pointed; mouth large, the maxillary reaching beyond the eye; teeth in narrow bands, each jaw with two canines; gill-rakers few, 12 on lower part of anterior arch; scales very small, chiefly cycloid; preopercle with a shallow emargination above the angle, with radiating serræ; caudal lunate; lower jaw projecting. _Mycteroperca falcata phenax._ The Scamp. Body elongate; head 3; depth 3-1/2; D. XI, 18; A. III, 11; eye 5; scales 24-135-43; dorsal fin single, the spines slender and weak; head pointed; mouth large, the maxillary reaching posterior border of the eye; teeth in narrow bands, each jaw with two strong canines, nearly vertical; preopercle finely serrate, a notch above the angle; scales mostly cycloid; outer rays of caudal produced. _Mycteroperca venenosa._ The Yellow-finned Grouper. Body elongate; head 3; depth 3-1/4; eye 7; scales 24-125-_x_; D. XI, 16; A. III, 11; head rather blunt; mouth large, the maxillary reaching much beyond the eye; teeth in narrow bands, each jaw with two strong canines, not directed forward; preopercle without salient angle, its emargination slight; dorsal fin single, its spines not very weak; caudal fin lunate; anal rounded. _Epinephelus adscensionis._ The Rock Hind. Body robust, little compressed; head 2-1/2; depth 3; eye 6; scales 12-100-40; D. XI, 17; A. III, 7; head subconic, acute; anterior profile straight; mouth large, the maxillary reaching beyond the eye; lower jaw strongly projecting; teeth in broad bands, the canines short and stout, those of the lower jaw the largest; preopercle finely serrate, convex, with but slight emargination; scales strongly ctenoid; dorsal fin single, its spines strong; caudal fin slightly rounded; gill-rakers short and thick. _Epinephelus guttatus._ The Red Hind. Body rather slender, moderately compressed, the back somewhat elevated; head 2-1/2; depth 3-1/3; eye 4-1/3; scales 19-100-x; D. XI, 16; A. III, 8; head long and pointed; mouth moderate, the maxillary reaching below posterior margin of eye; lower jaw rather weak, its tip little projecting; teeth rather strong, in moderate bands, both jaws with two curved canines, those in upper jaw largest; preopercle weakly serrate, with a salient angle, which is armed with stronger teeth; caudal fin rounded.