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 GOBIESOCID^. 

 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 by 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. 



