81 S4 
Bulletin //, United States National Micseum. 
than head; dorsal spines without filaments, the longest about 1.5 in depth 
of liody ; space between dorsals about cijnal to orbit; soft rays of dorsal 
and anal scarcely reaching base of caudal ; veutrals nnite<l, forming a cup- 
shaped disk, only about two-fifths ijosterioi* edge free from belly; caudal 
rounded. Scales very small, ctenoid, densely covering entire bo«ly except 
.a broad strip on belly; posterior portion of nape with A'ery fine scales; 
entire head naked. 
Color: Dark brown or olivaceous on head, side, and back; under parts 
})ale; fins all pale, the anal with a narrow darkish margin; caudal some- 
what dark ; no dark vertical bars on body and none at base of pectoral ; no 
H-shaped figure at base of caudal. 
This species is close to S. plnmieri, from which it differs chiefly in the 
color, the more complete squamatiou, the shorter pectoral, and the nou- 
filamentous character of the dorsal spines. 
Puerto Rico. A single sjiecimen, S.G.S inches long, obtained in the Rio de 
Caguitas at Caguas, .January 9, 1899, by the U. .S. Fish Commission expedi- 
tion to Puerto Rico. (Nayied for the Rio de Caguitas, from which the type 
was obtained.) 
Sicydium, cayuitee, Eveemaxn & ^Iarsh, Kept. I'. S. Fish Com. 18S9 (Dec. 19, 1899), 35.'>, 
Rio de Caguitas, Caguas, P. R. (Type, Xo. 49364, U.S.X.M. Coll. Fvenuann Jc 
Marsh.) 
Page 2230. After (iobius oceaniens, Pallas, in.sert: 
2.5.5H (a). OOIlll'S Il.tY.t.MO.VENSIS. Evermann Si Marsh. 
Head 4.8; depth 6.4; eye 5 ; snout 3.2 ; maxillary 1.8 ; mandible 1.9; inter- 
orbital 7.6; preorbital 4.6; scales 71-19, about 29 liefore dorsal; D. IV-14, 
the longe.st spine about 0.7 in head, the longest ray 1.5; A. 15, the longest 
ray 1.5; pectoral 1.1; veutrals 1.1; caudal very long and pointed. Body 
very long and slender ; headlong; caudal peduncle long; mouth very large, 
oblique; maxillary long, reaching past posterior border of orbit. 
Color as in fJ. oceanicus, which this species closely resembles. The smaller 
(71 instead of 63 to 65), almost cycloid scales, the longer head, larger 
mouth, longer maxillary, and the longer and more slender body are differ- 
ences which we can not reconcile with the descriptions of that species or 
with the numerous specimens of it which we have from Puerto Rico. 
Puerto Rico. Known only from the type, a specimen 9 inches long, ob- 
tained in the San .Juan market .January 11, 1899, by the U. S. Fish Com- 
mission expedition to Puerto Rico. It probaJdy came from near the mouth 
of the Ibij-amou River at Palo Seco, for which stream the species was 
named. 
(iobius bayamonetisis, Eveb.maxn Si Marsh, Kept. I'. S. Fi.sli Com. 1899 (Dec. 19, 1899), 
355, Mouth of Hayamon River, Palo Seco, P. R. (Type, No. 49365, U.S.N.M.; coll. 
Evermann Si Mar.sb.) 
Page 2218. To the synonymy of (iobius soporator add the following: 
(iobius arundelii, G.\rman, Proc. N. E. Zf>ol. Cliili, 1,63. .Tune 9. 1899, Clipperton Island. 
(Type in M. C. Z.) 
