Jordan and Evermann. Fishes of North America. 2257 



of soft dorsal (male) ; body entirely naked. Body everywhere speckled 

 with dots of dark brown. Male sometimes with traces of 8 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 below this as in dorsal and anal; no bands on tail. Fe- 

 male 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. Length 

 2 inches. Very common on sandy bottoms, everywhere about the estuary 

 of Mazatlan, the numerous specimens here described being dug out of the 

 sand. It is seldom found much, if any, below the mark of low tide. It is 

 a very handsomely colored species, the male being more strikingly marked 

 than any other of our gobies. (^Gotfr-rfp, band; ovpd, tail.) 



Gobiosoma zosterurum, JORDAN & GILBERT, Proc. TJ. S. Nat. Mus. 1881, 361, Mazatlan 

 (fin rays incorrect), (Type, No. 29245, U. S. Nat. Mus. Coll. C. H. Gilbert) ; JORDAN 



& ElGENMANN, I. C., 509. 



Evermannia zosterura, JORDAN, Proc. Cal. Ac. Sci., 2d ser., vol. IV, 1895, 498, pi. 51. 



827. GOBIOSOMA, Girard. 



(NAKED GOBIES.) 

 Gobiosoma, GTRARD, Proc. Ac. Nat. Sci. Phila. 1858, 169 (alepidotus). 



Body entirely naked; mouth moderate, horizontal; snout blunt; teeth 

 in several series, the outer row enlarged; no canines; dorsal spines nor- 

 mally 7, rarely 5 or 6; second dorsal and anal short; no barbels about 

 head; shoulder girdle without flaps. Species chiefly American. (Gobius: 

 , body.) 



a. Coloration olivaceous, mottled -with darker; no red nor blue. 



b. Maxillary extending to beyond pupil, 4J in head; color blackish, with sharply 

 denned cross bars of whitish. Body rather short, the depth 5| in length ; 

 head 3J; snout low, little obtuse; mouth large, rather oblique, the maxil- 

 lary 2f in head ; teeth small, in few series above, in a band below, the outer 

 enlarged ; fins low ; caudal 1J in head. Cross bands on body as wide as eye, 

 not quite meeting below ; a dark blotch on base of pectoral, a fainter one on 

 base of caudal ; fins nearly plain. D. VII-13 ; A. 12. HISTRIO, 2590. 



66. Maxillary extending to below posterior part of orbit; coloration not sharply 



defined, the body usually with dark cross streaks. 



c. Body rather short, chubby, the depth about 4 in length ; head about 3 ; 

 head rounded above; teeth in several series, slender, the outer ones 

 somewhat elongate, none of the inner ones specially enlarged. Color 

 olivaceous, with dark points; sides with narrow, alternating light and 

 dark bars ; a row of small linear dark spots along middle of sides ; first 

 dorsal with 3 oblique dark bars ; second dorsal, caudal, and pectorals 

 finely barred, base and edge of anal light, middle dark ; breast with 

 many well-defined spots ; a dark line running forward and downward 

 from eye to angle of mouth, another extending straight down ; a black 

 bar on edge of preopercle, a black spot on upper edge of opercle. D. 



VII-13; A. 10. MOLKSTUM,2591- 



