_Lutianus jocu._ The Dog Snapper. Body comparatively deep and compressed; the back elevated and profile straight; head 2-1/2; depth 2-1/2; eye 4-3/4; scales 8-56-15; D. X, 14; A. III, 8; mouth rather large, jaws subequal, maxillary reaching front of orbit; upper jaw with a narrow band of villiform teeth, a single series of larger ones, and 4 canines in front, 2 of them very large; lower jaw with a narrow, villiform band in front only, and a series of larger teeth outside, some almost caninelike; tongue with a single patch of teeth; an arrow-shaped patch on vomer; preopercle finely serrate above, coarser teeth at angle; gill-rakers short and thick, about 9 on lower arch. _Lutianus apodus._ The Schoolmaster Snapper. Body comparatively deep, moderately compressed, the back elevated and profile straight; head 2-1/2; depth 2-1/2; eye 4-1/3; scales 6-43-13; D. X, 14; A. III, 8; mouth large, maxillary reaching front of orbit; snout long and pointed; interorbital space flattish; upper jaw with a narrow band of villiform teeth, a single series of larger ones outside, and 4 canines in front, one on each side very large; lower jaw with a narrow, villiform band in front, an enlarged series outside; tongue with a large, single patch; an arrow-shaped patch on vomer; preopercle finely serrate above; gill-rakers short and thick, about 9 on lower part of arch. THE YELLOW-TAIL (_Ocyurus chrysurus_) The yellow-tail is a very handsome fish, and one of the favorite pan-fishes at Key West. It was named _chrysurus_, or "gold-tail," by Bloch, in 1790, from its description by Marcgrave in his "Fishes of Brazil." Its habitat is from southern Florida to South America. It is abundant in the vicinity of Key West in the channels between the reefs and keys. The yellow-tail is well proportioned, compressed, and elliptical, being regularly curved from head to tail. Its head is as long as the depth of the body, with a pointed snout; the mouth is rather small, with the lower jaw projecting. The color above is olivaceous, or bluish, below violet; a broad, deep yellow stripe runs from the snout, through the eye, and along the middle of the body to the caudal fin; above this stripe there are a number of deep yellow blotches, as if made by the finger tips; below the broad yellow stripe are quite a number of narrow, parallel yellow stripes, with violet interspaces; the iris of the eye is scarlet; the very long caudal fin is entirely deep yellow, and the other fins are bordered with yellow.