426 COXTRIBUTIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. 
cloiidod with dusky: fius nearly plain, dark. Mouth slightly oblique, 
the maxillary reaching to posterior margin of pupil. Teeth of jaws com- 
paratively small, subconical, little compressed; those of vomer and pala- 
tines minute and granular. Eye oi 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-fouith 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; depth rather less. D. 
XVII-IG-VIII ; A. I, IG-VIII. Monterey Bay, California; rare. A 
food-fish of high quality. 
{Chriomitra concolor Lockington, Proc. Acad. Nat. Sci. Phila. 1ST9.) 
6? 1. S. macuJatus (Mitch.) J. A G . — Sjyanish Mackerel. 
Bluish and silvery above with bright reflections ; sides with numer- 
ous bronze spots which are nearly round and about as large as the puj)!!. 
Spinous dorsal white at base, dark above and on the anterior half of 
the fin. Caudal keel well developed, ^ith a smaller keel above and 
below it. Head small and jtointed. Mouth rather large, oblique; max- 
illary reaching po.sterior margin of orbit. Teeth large, compressed, 
about 32 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 oj. D. XVni-18-IX ; A. II, 17-TIH. Coasts 
of Xorth America, north to Cape Cod and Lower California ; one of our 
mo.st valued food-fishes. 
{Scomber maculatm ilitch. Trans. Lit. A Phil. Soc. N. Y. i, Lifi, 1815: Cybium macu- 
latuni Gunther, ii, :J72: Cybium maeulaium Holbrook, Ichth. S. Car. G6.) 
672. S. regralis (Bloch) J. A G. — Cero. 
Silvery; .sides with a brownish, broken, longitudinal band, above and 
below which are numerous brownish spots, per.sistent in the adult ; an- 
terior portion of spinous dorsal black. Body rather elongate, its dorsal 
and ventral curves about equal. Lateral line de.scending 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 4J. D. XVH-1, 15- VIII ; A. II, 
HI. Cape Cod to Brazil; not common on our Atlantic coast; 
reaches a weight of 20 pounds. 
{Scomber reyalis Bloch, Ausl. Pische, taf. 3:13: Cybium regale Gunther, ii, 372: Scom- 
beromorm plumierii Lac. iii, 292: Cybium acertum C. A V. viii, 1831, 186: Cybium regale 
Poey, Proc. U. .S. Nat. Mus. 1878, 4.) 
