i 
NO. 1244. GOBIOID FTSIIES OF JAPAN— JORDAN AND SNYDER. 87 
y. Barbels about 3 on each side; 
cheeks scaly; scales cy- 
cloid, deciduous, of moder- 
atesize; caudalfin pointed; 
isthmus narrow. 
Chxtnrichthys. 23 
yy. Barbels about 10 on each 
side; isthmus narrow; 
scales moderate, rather 
firm; caudal lin truncate; 
dorsal rays short VIII-15. 
Ainosus. 24 
//. Teeth trilid in tlie outer series, the inner series simple; body 
robust, covered with rather large ctenoid scales; head very 
broad; cheeks tumid, scaleless; tongue rounded; gill openings 
separated by a broad isthmus; pectoral without silky rays; ven- 
tral s as in Gohina, not adnate to the belly; dorsal spines 6; soft 
dorsal and anal short. 
z. Edge of preopercle, pre- 
orbital, and ramiof lower 
jaw with fringes of bar- 
bels; a large pore be- 
hind eye. 
Tri nil opngon. 25 
zz. Edge of preopercle, pre- 
orbital, and lower jaw 
without l)arbels. 
Tridentiger. 26 
(in. lAiciogohiimr. Spinous dorsal wanting or reduced to a rudiment of less than 
6 rays; ventrals small, united in a short, rounded flap; body naked or with 
small embedded scales; head broad, depressed above, with tumid cheeks; 
teeth simple; soft dorsal and anal of moderate length. 
It' . Spinovis dorsal present, of three small spines; isthmus broad. 
//. Body short and deep; the skin largely scaly . Aslrahf. 27 
hi/. Body elongate. 
<■' . Mouth large, oblique, the chin projecting; body chiefly naked; insertion of 
dorsal opposite that of anal ; subor])ital with barbels danger. 28 
rc^. ^louth small, the chin included; body largely scaly; insertion of dorsal 
far in front of that of anal; suborbital without barbels. 
Eiitun lichtlnitt. 29 
(III'. Spinous dorsal wanting. 
'/'. Isthmus broad; anal lin moderate, its insertion almost dire(;tly below 
that of dorsal ; mouth large, obii(jno; coloration dark. 
Luciogobliis. 30 
(IiF. Isthmus very narrow, the gill ojienings continued forwai'd below; anal 
long, its insertion consi<lerably liefore that of dorsal; mouth moderate; 
color translucent Iy('iico))snrion. 31 
11. Soft dorsal and anal very long, joined to the caudal; body eel-sliaped, elongate 
and compressed, naked, or covered with very small scales. 
*'. Trypauchenma'. Temporal region with a deep pit; eyes distinct, small; 
teeth small; ventral fins small. 
f. Ventral fins divided, but united at base Trypaudien. 32 
re'. Gohioidmiv. Temporal region without fossa; eyes scarcely visible; 
teeth very long; curved, fang-like. 
g'. Soft dorsal and anal very long, of 35 to 50 rays each. 
Tanioiiles. 33 
