93 FISHES OF SINALOA. 465 
anteriorly; scales 13-76-20; all the fins, with the excep- 
tion of spinous dorsal, entirely scaled. 
Tip of pectoral sharply rounded; front of anal not 
greatly elevated, its longest ray 3 in base of fin, which is 
about equal to head; spinous dorsal higher than soft 
dorsal; upper lobe of caudal the longer. 
Color, steel blue, brighter than in e/egans, with bronze 
streaks along the edges or rows of scales, much brighter 
than in elegans. A broader gray streak bordered with 
bronze at base of soft dorsal. A large brassy spot in the 
axil, extending along shoulder girdle; a deep bronze 
stripe through eye, another back from angle of mouth; 
the two separated by steel blue; fins all blue black, with 
some bronze, especially on pectoral. Body more elongate 
than in e/egans; the form more elliptical; the mouth less 
blunt, .with fewer teeth; the scales smaller and more 
crowded anteriorly; the fins lower, especially the anal. 
Well separated from Ayphosus elegans, living chiefly in 
the rocks outside; rare in the bay. Largest specimen 
eighteen inches long. 
I51. Kyphosus elegans (Peters). CuHopa. 
This species is rather common about Mazatlan, espe- 
cially in the sluggish waters of the Astillero. Like the 
preceding, it reaches a length of about fifteen inches. 
Head) 372.. depth, 2; dorsal XIj-12; anal TI 11; eve 
4 in head; snout 3%; maxillary 34; pectoral 12, equals 
ventral; longest ray of soft dorsal 2%; longest dorsal 
spine 2%; longest analray 2; upper lobe of caudal equals 
head. 
Body ovate, compressed; profile rounded, slightly pro- 
duced before eyes; concave over snout in some speci- 
mens, straight in others; a gentle curve from eyes to dor- 
sal. Mouth small, horizontal, the jaws equal: teeth in a 
