Jordan and Evermann. — Fishes of North America. 909 



1301. HKCAI'TKKUS MACARELLUS (Cuviei k Valencieuiies). 

 (SIackkuki, Siial>; Antunino.) 



Head 5 : depth 6. D. VIII-1, HH-I : A. II-I, 27-1 ; teoth obsolete ; scntes 

 beginniug at end of dorsal, 25 ot them with keels. Lateral line nearly 

 straight. Silvery, plumbeous below ; a small black spot on the opercle. 

 Warm parts of the Atlantic, straying northward to (Jape Cod; scarce on 

 our coast. Length 1 foot. (French maqmreau, mackerel, the name 

 applied to the species in Martinique.) 



Caranx macarellus, CuviER & Valenciennes, Hist. Nat. Poiss., ix, Id, ISIi:!, Martinique; Gl'n- 



THER, Cat., II, 42C, 1860. 

 Decajiterns macarellus, Poey, Enuiiuu'atio, 7'J, 1875; Jordan .V Gilisekt, Proc. U. S. Nat. Mus., 



1883, 190; Jordan & Gilbert, Syuopsis, 433, 1883. 



416. TRACHURUS, Raiinesque. 



(Saukels.) 



lyavhnrns, llAFiNESQi'E, Iiiilico d'lttiologia Siciliana, 20, 1810, {Iracliiinif). 

 D-iichiiriif:, CuviEK, Kegiie Animal, Ed. 1, 1817, (Irachnnis). 



Body rather elongate, somewhat compressed, not elevated, tapering to 

 a slender caudal peduncle, which is as broad as deep. Scales present, not 

 very small. Lateral line armed throughout with plates, those on the 

 caudal peduncle larger and spinous ; an accessory dorsal branch to the 

 lateral line. Snout rather long. Mouth moderate. Minute teeth mostly 

 in single series on jaws, vomer, and palatines. Dorsals 2, the first pre- 

 ceded by a procumbent spine. No finlets. Two strong spines before the 

 anal, connected by membrane. Pyloric cceca numerous. About 4 species 

 known ; found in all warm seas, {rpaxovfioc, the ancient name of Trachurua 

 trachurus; from rpa^^yf, rough ; oi'pa, tail. ) 



<i. Body elongate, little compressed, the depth 5 in length ; scutes about 96 (50 + 46 to 48) in 

 number, the heiglit of the anterior scutes },.^ that of the posterior and about 2],:^ in 

 diameter of eye; curved part of lateral line scarcely shorter than straight part; maxil- 

 lary 2% in head, reaching just beyond vertical from front of eye; lining of opercle 

 scarcely blackish. picturatu.s, 1302. 



aa. Body comparatively deep and compro8.sed, the depth 4 to i% in length; scutes about 72 

 (34 to 36 4- 36 to 38) in numl)er, the anterior scutes scarcely lower than tlio posterior, 

 their height about 1}^ 'f diameter of eye; length of curved part uf lateral line 1? to 

 I5 in straight part; maxillary reaching past front of pupil, 2'^ to 2J in head; lining 

 of opercle blacki.sh. trachuriis, 1303. 



1302. TKACHUBUS PICTUBATUS (Bowdich). 

 (Horse-mackerel; Xiirel.) 



Head 31; depth 5. D. VIII-I, 31; A. H-I, 27; scales 50 -}- 47 in Cali- 

 fornia examples, 90 to 108 in others. Similar to Trachurus trachurus, but 

 slenderer and less compressed and reaching a much larger size. Arch of 

 lateral line longer, as long as straight part, the junction of the two much 

 beyond tip of pectoral; plates on the anterior part small, crowded, their 

 height less than half eye. Length 2 feet. Warm seas, especially common 

 on the coast of California, from San Francisco southward to the Galapagos 



