2230 Bulletin 47, United States National Museum. 



2558. GOBIUS OCEANIOUS, Pallas. 

 (Esmeralda ; Endokmi fiMEEAUDE; Bacalhao Sabara.) 

 Head 4^ to 6; depth 6^ to 8i; eye 4 to 5 in head; ventral 6 to 6i; 

 pectorals 5| to 6^. D. VI-14. A. I, 14 or 15; scales about 65. Body 

 extremely elongate ; head very short; upper part of opercle scaled, head 

 otherwise naked. Scales on body very small, becoming much larger 

 behind. All the dorsal spines more or less filamentous ; caudal fin nearly 

 half leuo-th of rest of body. Skull behind eye broad and short, its length 

 li in widtli, no decided ridges nor crests; lateral crests largo and stout 

 behind, minute forward ; interorbital area narrow, deeply grooved, with 

 a median ridge. Color in spirits, reddish olive; a distinct, round, black- 

 ish blotch below spinous dorsal, twice as large as orbit; an indistinct 

 dusky shade along middle of sides, terminating in a dusky blotch on 

 base of caudal; middle of sides with a- series of marks, formed by very 

 veiny lines widely diverging backward ; a similar narrow line from eye 

 to maxillary, and 1 from eye backward to upper angle of preopercle ; evi- 

 dent traces of the emerald spot at base of tongue; 2 small dark spots on 

 first dorsal spine ; spinous dorsal dusky, Avith a light and dusky streak at 

 base; soft dorsal dusky, a light (bluish in life) area behind each ray; 

 anterior rays barred with light and dark ; anal and ventrals whitish (prob- 

 ably blue in life), the ventrals without dark markings; pectorals dusky, 

 the base lighter, and with some indistinct dusky bars; a dusky half bar 

 ou the upper part of the axil; base of tongue tuberculate, and shining 

 with bright blue, and green refieetions like a jirecious stone (hence the 

 names smaragdus, rsmeralda, etc.), this color fading in spirits. Vertebrte 

 elongate, 11 -j- 15 ^ 26. Length a foot. South Atlantic and Gulf coasts 

 of the United States and southward through the West Indies; not rare, 

 perhaps intergrading with the preceding. Here described from a speci- 

 men 11 inches long, taken by Dr. Gilbert in Charleston Harbor, {oceanicus, 

 ocean.) 



Gobirts cauda longissima acuminata, Geonow, Zoopli., 82, No. 277, pi. 4, fig. 4, 1763, locality 

 unknown. 



Gobius occanicus, Pallas, Spicilegia, vni, 4, 1769, locality unknown: after Gronow; Joe- 

 dan & ElGEN.MANN, I. c, 497. 



Gobius lanceolatus, Bloch, Fische Deutschlands, u, 8, pi. 38, fig. 1, 1783, Martinique, 

 figure probably from Plumier; Cuvier & Valenciennes, Hist. Nat. Poiss., xn, 114, 

 1837; Poey, Synopsis, 393, 1868. 



Gobhis hacalavs, Cuvier & Valenciennes, Hist. Nat. Poiss., xii, 119, 1837, Surinam (Coll. 

 LeValliant); Cayenne (Coll. Eichard) ; Cuba (Coll. Poey). 



Gobionellus oceanicvs, Jordan & Gilbert, Proo. U. S. Nat. Mus. 1882, 613; Jordan & Gil- 

 bert, Synopsis, 636, 1883. 



Subgenus LYTHRYPNUS, Jordan \ Evermann. 

 2559. GOBIUS DALLI, Gilbert. 



Head 3J; depth 4^. D. VI-17; A. 14; scales 40. Body short, com- 

 pressed, resembling Microgohius. Head high, mouth moderate, very 

 oblique; upper pectoral rays normal; scales ctenoid, of moderate size; 

 anterior dorsal spines much produced. Mouth very oblique, the maxillary 



