27 FISHES OF SINALOA. 499 
Male sometimes with traces of eight olive cross- bands. 
Fins very ornate, the dorsal and anal yellowish at base, 
then a broad median band of jet black, then a broad white 
margin. Middle of caudal yellow to the tip, with a black 
‘band above and below, and a white edge above and _ be- 
low this as in dorsal and anal; no bands on tail. 
Female with dorsal filament short, reaching about to 
first soft ray. Dorsals and anal checkered with blackish; 
caudal faintly barred; all vertical fins with pale edgings, 
but without the black stripe of the males. 
Family GOBIESOCIDA. 
209. Gobiesox adustus Jordan & Gilbert. 
Obtained by Dr. Gilbert in rock pools at Mazatlan. 
Rare and not found by us. 
210. Gobiesox erythrops Jordan & Gilbert. 
Found rare in rock pools at Mazatlan by Dr. Gilbert, 
who also records a specimen from Tres Marias. Not 
Seen Dy. US. 
211. Gobiesox zebra Jordan & Gilbert. 
Very abundant in rocky places at Mazatlan, especially 
among sea urchins. Numerous specimens were obtained 
by us, as also by Dr. Gilbert. 
The coloration is quite variable, although the markings 
are rather constant. In general, light pink with mark- 
ings of gray, blackish and olive; a distinct dusky blotch 
behind eye and a dark bar across caudal. 
212. Gobiesox eos Jordan & Gilbert. 
Found in rock pools at Mazatlan by Dr. Gilbert. Not 
recorded from any other locality. 
Two specimens obtained by us from rock pools among 
echini. The bright cherry red coloration is distinctive 
and persists in alcohol. 
