114 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiv. 
a narrow, elevated ridge; but no papillse. Gill-rakers 3 + 12, rather 
short and l)lunt. 
Head naked, without barbels; anterior nostril with a high tube. 
Body with large, ctenoid scales; those anterior to dorsal and pectorals 
and on belly small and smooth; those on breast anterior to ventrals 
minute, embedded in the skin. 
Dorsals separate; the spines long and filamentous, those of the 
females much shorter. Anal inserted below third or fourth dorsal 
ray. when depressed extending as far posteriorly as the dorsal, neither 
quite reaching the caudal. Caudal fin rounded. Pectoral without 
filaments on its upper border. Ventrals of moderate size; free 
posteriorly. 
Color dark; head with a few small, faint light spots; body with nar- 
row, light, lateral bands, which are more distinct posteriorly; dorsals 
dusky; with subdued darker markings; the first spine or ray of each 
fin with -l sharply outlined black dots; soft dorsal and anal narrowly 
edged with white; interradial membranes of caudal dark; pectoral 
with a vertical white band near its base, and a dark spot at upper edge 
of base. The band of pectoral is bright orange in life. 
In some specimens the snout is broader, the cheek muscles more 
pufl'ed out, the eye a little smaller, and the maxillary slightly shorter 
than in others. Those from some localities are a little lighter in color 
than the one described. They have definite, small, round, white spots 
on the lower parts of the cheeks; the longitudinal bars on the body 
are more distinct and the spot at upper part of base of pectoral is more 
conspicuous. 
TrioeiwphorlcJitliys squamistrigattis of Hilgendorf is believed to be 
identical with Sicydiiim obscurunn of Schlegel. The series of speci- 
mens examined by us agree with the descriptions of both species 
referred to above, except in the covering of the breast. Hilgendorf s 
statement that the breast is naked is probably due to an oversight, as 
the region anterior to the ventrals is covered with small, deeply 
embedded scales. The species is represented in our collection by 
specimens from Nagasaki on the south to Tokj'o on the north. 
The present description is taken from an individual from Enoshima. 
Our specimens are from Tsuruga, Aomori, Matsushima, Kawa- 
tana, Kobe, Kurume, Nagasaki, Mis'aki, Wakanoura, Same, Enoshima,, 
Niigata, Tone River, Ise, and from Ishikawa-ken. 
The species is ver}^ abundant in the river mouths and estuaries 
throughout the southern islands of Japan. It is called Torahaze or 
Tiger goby. 
{Ohscurus, dusky.) 
1 
