426 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



clouded with dusky; fins nearly plain, dark. Mouth slightly oblique, 

 the maxillary reaching to i)osterior margin of pupil. Teeth of jaws com- 

 paratively small, subconical, little compressed ; those of vomer and pala- 

 tines minute and granular. Eye 5^ in head. Pectoral fins 8 in length, 

 inserted rather above axis of body; ventral fins small; spines of dorsal 

 slender and fragile, the longest one-fourth as long as the head ; dorsal 

 fins separated by an interspace equal to one-third the length of base of 

 spinous dorsal; caudal shorter than head, its lower lobe longest, Gill- 

 rakers long, 18 below angle. Head about 5; deptli rather less. D. 

 XVII-IG-YIII; A. I, IG-VIII. Monterey Bay, California; rare. A 

 food-fish of high quality. 



(Cliriomitra concolor Lockiugtou, Proc. Acad. Nat. Sci. Pliila. 1879.) 



CTl. S. macillatus (Mitch.) J. & G. — Spanish Mackerel, 



Bluisli and silvery above with bright retiections ; sides with numer- 

 ous bronze spots which are nearly round and about as large as the pupil. 

 Spinous dorsal white at base, dark above and on the anterior half of 

 the fin. Caudal keel well developed, with a smaller keel abov^e and 

 below it. Head small and pointed. Mouth rather large, oblique; max- 

 illary reaching posterior margin of orbit. Teeth large, compressed, 

 about 33 in each jaw. Gill-rakers few,, slender, about 12 below angle. 

 Interspaces between dorsals shorter than eye ; caudal as long as head. 

 Head 4^ in length ; depth 51. D. XYIII-IS-IX ; A. II, 17-VIII. Coasts 

 of North America, north to Cajje Cod and Lower California; one of our 

 most valued food-fishes. 



{Scomher maculatm Mitch. Trans. Lit. & Phil. Soc. N. Y. i, 420,1815: Ci/bium macu- 

 latum Giinther, ii, '.i7'Z : Cybium macalaiiim Ilolbrook, Ichth. S. Car. (iO. ) 



672. S. ri^galis (Bloch) J. & G.—Cero. 



Silvery; sides with a brownish, broken, longitudinal band, above and 

 below which are numerous brownish spots, persistent in the adult ; an- 

 terior portion of spinous dorsal black. Body rather elongate, its dorsal 

 and ventral curves about equal. Lateral line descending obliquely, 

 slightly undulate along the tail. Mouth large ; maxillary reaching to 

 below eye. Teeth triangular, strongly compressed, about 20-lG. Pec- 

 toral scaly. Head 4 in length ; depth 4 J. D. XVII-1, 15-VIII ; A. II, 

 15-VIII. Cape Cod to Brazil; not common on our Atlantic coast; 

 reaches a weight of 20 pounds. 



{Scomber regalis Bloch, Ausl. Fische, taf. .3:53: Cybium regale Giinther, ii, 372: Scom- 

 beromorus plumicrii Lac. iii, 2U2: Cybium accrvum C. &, V. viii, 1831, 186: Cybium regale 

 Poey, Proc. U. S. Nat. Mus. 1878, 4.) 



