FAMILY SCOMBRIDA — SERIOLA. 129 
Color. Silvery blue on the back and sides, becoming of a faint greenish yellow (which 
deepens after death) on the abdomen. Five and more, usually six, broad dusky bands nearly 
surrounding the body and tail; another oblique band on each side, ascending from the nose 
through the eye to the first dorsal, and forming a sort of crescent in front. Summit of the 
head dark blue, leaving a lighter colored space between the eyes. Irides yellowish. A round 
black spot in the larger individuals, on the side of the body above the lateral line, and oppo- 
site the foremost rays of the second dorsal. Both dorsal fins deep olive ; the tips of the first 
four rays of the second dorsal edged with white, and the bases of the last rays of this fin 
also white. Ventrals bright olive-green above; beneath, the rays are white. Anal olive- 
green, margined throughout with white; the last rays white. The colors of this fish are 
extremely fugacious, the belly and sides turning white a few minutes after death; the bands 
then extend over the dorsal and anal fins. 
Length, 7°5. Depth, 2°0. 
Bintays,. Di 7.0.34; P. 193-Vi 6s A. 1.200615 2 
I have not seen many of these fish, which are usually caught in August, September and 
October. I have taken them by hook in Long Island sound, in company with the Big Porgee. 
They are exceedingly active and lively in their motions, as might indeed be inferred from their 
form. 'They are called Rudder-fish by the fishermen, who apply the same name to other 
fishes. In the specimens four inches long, the anal spines require to be dissected to make 
them appear. his fish, when fresh from the water, has a peculiar coppery smell. 
(EXTRA-LIMITAL.) 
S. boscu. (Cuv. et Var. Vol. 9, p. 209.) Silvery with brownish on the temples; faint strie on the 
opercles. Thirty-one soft rays to the second dorsal. Length five and a half inches. South- 
Carolina. 
S. fasciata, (Iv. Vol. 9, p. 211.) Sixteen narrow ribbons in pairs over the body; a black transversal 
band from one eye to the other. Length 61 inches. South-Carolina. 
S. leiarchus. (Ip. Vol. 9, p. 213.) Silvery; plumbeous on the back. Three black spots on the 
dorsal, and two on the anal. Length nine inches. Delaware. An juv. S. zonata ? 
S. cosmopolita. (Ip. Vol. 9. p- 219, and pl. 74, fig. 237 of this work.) Silvery; back greenish; a 
black spot on the tail. Ventrals very small. D. 7.1.28; A. 2.1.27. From the East Indies 
and New-York. 
Fauna — Parr 4. 17 
