426 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



clouded \vithdusky; fins 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 voiner and pala- 

 tines minute and granular. Eye 5 in head. Pectoral lius 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 

 tins 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-1G-VIIE; A. I, 1C- VIII. Monterey Bay, California; rare. A 

 food-fish of high quality. 



(Cliriomitra concolor Lockington, Proc. Acad. Nat. Sci. Pkila. 1879.) 



671. S. macillatus (Mitch.) J. & G. Sjmnish Mackerel. 



Bluish and silvery above with bright reflections ; 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 above and 

 below it. Ilead small and pointed. Mouth rather large, oblique: max- 

 illary reaching posterior 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 4J in length ; depth f>. D. XVIII-1S-1X ; A. II, 17-VIII. Coasts 

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

 most valued food-fishes. 



(Srtmibtr iiitii-iiltttiiH Mitch. Trans. Lit. & Phil. Soc. N. Y. i, 4'Jfi, 1815: Ci/liiim macu- 

 littuin IJiintluT, ii, :>72: L'ybium maculatum Holbrook, Ichth. S. I'ar. (Hi.) 



672. S. refjalJs (Bloch) J. & G. 



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

 below whiehare 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 L'O-K!. pec- 

 toral scaly. Head 1 in length; depth Ii. D. XV1I-1, 15-V1II; A. 11, 

 1.1-VIII. Cape, Cod to Bra/il; not common on our Atlantic coast; 

 reaches a weight of L'0 pounds. 



i-K/alin lilocli, Ansl. l-'isclir, taf. :?:!:!: ri/himn rr</,il,- (iiimlicr, ii, ,'!7v>: Scom- 

 i-iin jilitmii rii Lac. iii, 'J'.i'J: <'i/l>iinn m-trntm C. &, V. viii, 1831, IdG: Cybium rcyalc 

 Proc. I*. S. Nat. Mus. 1S7H, 4.) 



