440 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



1815, 383: Argyrioaus romer GiintluT, ii, 458: Selene argentea Lac<?pede, iv, 5GO: 

 .Irtiyrt-iimtix I'tieificuH Lockiii^ton, 1'roc. Cal. Acad. Nat. Sci. 1876: Selene argentea (adult) 

 :unl AnjiirioMix romer (partly growii) of most recent writers. Llitken, Spolia Atlantioa, 

 1 ii, ;, 17, in which memoir the stages of growth of this and other species are fully 

 described.) 



aa. All the lins very low, none of the rays produced or filamentous in the adult. ( Fo- 

 nur* C'uvier.) 



CO I. S. sotipiaiias (Mitch.) Liitken. Horse Fish. 



Gnvnish above, below golden or silvery. Young with a black blotch 

 at origin of straight part of lateral line. ' Body oblong, rhombic, less 

 elevated than in the other species ; proiile anteriorly nearly vertical, 

 highest above the eye, snout somewhat protruding, belly most arched 

 in the young; mouth oblique; maxillary reaching vertical from front of 

 orbit. Ventral fins minute; dorsal and anal very low, especially in the 

 adult, the long rays disappearing very early ; pectorals falcate, about as 

 long as head. Head 3 in length; depth If. D. VIII-I, 21; A. II-I, 

 17. Tropical America, north to Cape Cod ; not very common on our 

 coasts. 



(Zens xetaplnn'w Mitch. Trans. Lit. & Phil. Soc. N. Y. 1815, 384: Argyrelosus setipin- 

 nix Giinthcr, ii, 4.~>LI : Power brown i Cuv. & Val. ix, 189 : Tomer browni Drkay, New York 

 Fauna, Fish. l'J7 ; Liitken, Spolia Atlanlica, 1880, 543: Tomer curtuu Cope, Proc. Acad. 

 Nat. Sci. 1'hila. 1870, ll'J: Aryyniusuy uiiimaeulatua Batchelder.) 



224. CIILOROSCOITIBRUS Girard. 

 (Micropteryx Agassiz, preoccupied.) 



(Girard, Pror. Acad. Nat. Sci. Phila. 1858, 168: type Seriola cosmopolita Cuv. & Val. 

 = Scomber cliryxurii* L.) 



Body oblong ovate, closely compressed, but not elevated ; the abdomen 

 promiiH-nt anteriorly, its curve being much greater than the curve of the 

 back. Occiput and thoracic region trenchant. Caudal peduncle very 

 narrow, the fin widely forked. Scales small, smooth. Lateral line arched 

 in front, unarmed. Head nearly naked. Preorbital low. Mouth rather 

 small, oblique, lower jaw scarcely projecting; upper jaw protractile; 

 maxillary broad, emarginatr behind, uitli a large supplemental bone, 

 .laws, \omcr, and palatines with feeble teeth, mostly in 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 linlets. Anal spines strong. A'etitrals small; pectorals falcate, 

 (lill rakers long. (/).><<>;, green; <- r, mackerel.) 



' Cuvier, KI^HC Auim. ii, 1^17: tyi- l'<un<r bnm-ni Cuv. -. ZCHH ndqiinni.i Mitchill: 

 i. l.at in rtni r, a jiluusliarc. ) 



