276 BULLETIN OF THE BUREAU OF FISHERIES. 
248. Butis amboinensis Bleeker. 
Eleotris amboinensis Bleeker, Bijd. Ichth. Amboina, tv, in Nat. T. Ned. Ind., v, 1853, 343; Amboina. Giinther, Cat. Fishes, 
1,117, 1861. (?) Day, Fishes India, 316, 1878-88; Bengal (probably not the same). 
Butis amboinensis Bleeker, Revis. Eleotriformes, 66, 1875. 
Head 3 in length without caudal; depth 5.50; in total length, including caudal, 6.75; depth of caudal 
peduncle, 3.60 in head; eye 5 in head, equal to interorbital space; interorbital space 6 in head; maxillary 
2.50 in head, scarcely exceeding a vertical from anterior margin of orbit; teeth minute, in bands, none 
enlarged; dorsal v1-9; anal 9; scales 29; secondary scales absent; color brown, the back with 6 distinct 
cross bands and each side with an obscure longitudinal stripe of dusky, of the width of one scale; most 
scales of side with a post-central whitish spot, these spots forming rows as in Butis butis and Butis pris- 
maticus; an obscure dark band across cheek and opercle, and a similar one on the snout, from eye to 
middle of maxillary; dorsals, anal, and ventrals dusky, anal blackish with pale outer margins; upper edge 
of caudal pale, rest blackish; pectoral paler, with a large black spot at base, with two smaller white ones 
in front of it, above and below. : 
Two specimens, 2.50 and 3.50 inches long, from Mindoro Island. 
This species is readily distinguished from Butis butis and Butis prismaticus by its slenderer form, 
narrower interorbital space, absence of secondary scales, and different coloration. 
HYPSELEOTRIS Gill. 
249. Hypseleotris modestus (Bleeker). 
Head 3.60; depth 4.25; eye 3.66; dorsal v1-10; anal 11; scales 29; a dark vertical bar across base of 
pectoral; a small caudal spot; no side stripe; fins pale, the spinous dorsal and caudal with faint brown 
specks. 
A single specimen, 2.50 inches long, from Mindoro Island. 
Bleeker states that this species has no specks on either dorsal fin. In our specimen the specks are 
very faint. 
PERIOPHTHALMUS Bloch & Schneider. 
250. Periophthalmus barbarus (Linneus). (Periophthalmus cantonensis (Osbeck); Periophthalmus 
kelreuteri Pallas; Periophthalmus kalolo Lesson.) 
One specimen, 3 inches long, from Ticao Island, and one from Aparri, northern Luzon, 2.50 inches. 
Scales in Ticao specimen 82, in Aparri specimen 76. 
These specimens seem to be identical with examples from Tokyo and with others from Samoa. It is 
doubtful whether more than one species of Periophthalmus proper can be defined. The specimens from 
Panay called Periophthalmus chrysospilus by Jordan & Seale are not different from Periophthalmus 
barbarus. 
RHINOGOBIUS Gill. 
(Porogobvus and Acentrogobius Bleeker; Coryphopterus Gill.) 
251. Rhinogobius nebulosus (Forskal). 
Gobius nebulosus 4 Forskal, Deser. Animal., 24, 1775; Red Sea. 
Gobius criniger Cuvier & Valenciennes, Hist. Nat. Poiss., x11, 82, 1837; New Guinea. Giinther, Cat. Fishes, 1, 29, 1861. 
Day, Fishes India, 288, pl. Lx1, fig. 2, 1878-88. 
Rhinogobius nebulosus Jordan & Seale, Bul. U.S. Fish Comm., xxy1, 1906, 41; Cavite, Philippine Islands. Jordan & Seale, 
ibid., xxv, 1905, 401; Apia, Samoa. 
Rhinogobius lungi Jordan & Seale, Bul. U. S. Fish Comm., xx1, 1901, 41, fig. 13; Panay, Philippine Islands. 
Head 3.50; depth 4.60; nose 3.20; interorbital space .6 of eye; eye 3.40 in head; maxillary 2.75; dorsal 
yr-10; anal 10; scales 28; head and nape naked; body with four large roundish black blotches on each 
side, alternating with broad saddle-like dorsal blotches; nape with two broad bands of dusky, each 
broken up by vermiculate lines of pale; anal fin with a dark edge. 
Five specimens from Manila 3 inches long, and one from Aparri 4 inches. 
a This name is thought by Klunzinger (Fische Rothen Meeres, p. 479) to be perhaps a synonym of Gobius caninus C. & 
V. The latter species, however, lacks the black border of the anal fin, described by Forsk&l in Gobius nebulosus. 
