136 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Color, uniform silvery in adult. 
Our observations of this species tend to confirm the correctness of Dr. Liitken’s views (Spolia 
Atlantica, 139) as to the transformations incident to its growth. 
A species of tropical America, occurring on both coasts, from Cape Cod to Brazil, and from Lower 
California to Peru. Very common southward on sandy shores, both in the Atlantic and Pacific. No 
specimens were obtained by us, but we include it on the authority of Poey and Stahl. It attains a 
weight of about 2 pounds and is a delicious pan-fish. 
Zeus vomer Linn., Syst. Nat., ed. X, 1758, 266, America; after Zeus caucla bifurca of Linnaeus, Mus. Adolph-Fred., I, 66. 
Zeus gallus Linn., Syst. Nat., ed. X, 1758, 267, America; after Zeus cauda bifurca of Artedi; confused with Alectis ciliaris. 
Zeus capillaris Mitchill, Trans. Lit. & Phil. Soc., 1, 1815, 383 (young), New York. 
Zeus rostratus Mitchill, 1. c., 384, New York (young). 
Zeus geometricus Mitchill, Amer. Monthly Mag., II, 1818, 245 (adult), New York. 
Argyriosus triacanthus Swainson, Nat. Hist. Class’n Fish., 250, 1839, Brazil; after Spix A Agassiz, pi. 58 (young). 
Argyriosus mauricei Swainson, 1. c., 408, Brazil (adult). 
Argyriosus mitchilli De Kay, N. Y. Fauna: Fishes, 126, 1842 (young), New York. 
Argyriosus brevoorti Gill, Proc. Ac. Nat. Sci. Phila. 1863, 83, Panama (young). 
Argyriosus pacificus Lockington, Proc. Ac. Nat. Sci. Phila. 1876, 84, Lower California; adult. 
Selene argentea, Poey, Fauna Puerto-Riquena, 332, 1881; Stahl, 1. c., 77 and 164, 1883. 
Selene vomer, Jordan & Evermann, 1. c., 936, 1896. 
Genus 60. CHLOROSCOMBRUS Girard. The Casabes. 
Body oblong-ovate, closely compressed, but not elevated, the abdomen prominent anteriorly, its 
curve much greater than curve of back. Occiput and thoracic region trenchant. Caudal peduncle 
very narrow, fin widely forked. Scales small, smooth. Lateral line arched in front, unarmed, or with a 
few small plates. Head nearly naked. Preorbital low. Mouth rather small, oblique, lower jaw scarcely 
projecting; upper jaw protractile; maxillary broad, emarginate behind, with large supplemental bone. 
Jaws, vomer, and palatines with feeble teeth, mostly in a single series. First dorsal of feeble spines, 
connected by membrane; second dorsal and anal long and low, similar, much longer than the short 
abdomen. No finlets. Anal spines strong. Ventrals small; pectoral falcate. Gillrakers long. 
An American genus, of small size, and little valued as food. 
95. Chloroscombrus chrysurus (Linnfeus) . Casabe; Bumper. 
Head 3.75; depth 2.33; eye very large, longer than snout, about 3 in head; D. viii-i, 26; A. ii-i, 26. 
Head rather deeper than long; opercles very short; snout short. Mouth very oblique; maxillary reaching 
anterior margin of eye. Chord of curved part of lateral line scarcely longer than head, 1.66 to 1.75 times 
in length of straight part. Lateral line wholly unarmed. Caudal peduncle longer than deep, its diameter 
less than that of eye; ventrals very small, fitting into a groove in which the vent is situated; pectoral 
long, falcate, one-third the length. 
Greenish above, sides and below golden; a jet-black spot on caudal peduncle above; dark open 
cular and axillary spots; inside of mouth black; fins not bordered nor tipped with black. 
