Be FISHES OF SINALOA. 425 
dimentary; second 3% in longest soft ray. First soft ray 
slender, but articulate, half length of longest ray.* 
Olivaceous, sides creamy, white. Many scales on sides 
punctate so that black scales seem scattered among the 
others. A conspicuous black bar at base of pectoral, 
followed by a white streak; a narrow black rim around 
lower half of eye. Fins all creamy yellow, the upper 
ones blotched and dotted with blackish. Young with a 
black blotch surrounded by orange on first dorsal. Spot 
on pectoral distinct at all ages. 
Family SPHYRAENIDZ. 
72. Sphyrena ensis Jordan & Gilbert. Vicupa. 
Rather common in the harbor, where it was found by 
Dr. Gilbert; also recorded from Panama by Gilbert, and 
from San Bartholomé Bay and Panama by Steindachner. 
An excellent food fish, but reaching a smaller size than 
most species of the group. 
Family POLYNEMID. 
73. Polydactylus approximans(Lay & Bennett). Raton. 
Very common, especially on sandy beaches; many 
specimens taken by us; also recorded by Gilbert from 
Mazatlan and from other localities. Used as food. 
74. Polydactylus opercularis (Gill. ) 
Obtained by Dr. Gilbert from Mazatlan and Panama; 
not seen by us. 
Family HOLOCENTRID. 
75. Holocentrus suborbitalis Gill. Mojarra Car- 
DENAL. 
Very abundant in all rocky pools about Mazatlan. It 
reaches only a small size, barely exceeding six inches, 


* Apparently taken for a spine by Dr. Giinther, who counts A, III, 9 
2p SeErR., VOL. V. ( 28 ) August 15, 1895. 
