N0.1244. GOBIOID FISHES OF JAPAN— JORDAN AND SNYDER. 128 
SO. LUCIOGOBIUS Gill. 
Luciogobius Gill, Proc. Ac. Nat. Sci. Phila., 1859, p. 146 {guttatu^) . 
Body elongate, moderately compressed, the skin naked. Head long 
and low, depressed above, with tumid cheeks^ mouth rather large, 
terminal, oblique, the chin prominent; teeth pointed; no barbels; 
tongue^ notched; gill openings narrow, not extending forward below, 
separated by a broad isthmus. Spinous dorsal wanting. Soft dorsal 
rather short, opposite the short anal; caudal short, roiuided, remote 
from dorsal and anal; pectorals rather large, without silk-like rays; 
ventrals very short, the rays indistinct, the two fins united in a rounded 
disk. Color dusky. 
One species known, a small gob}" of the muddy shores of Japan, 
resembling Zoarcids in appearance, but evidently belonging to the 
same family with the other gobies. 
{Lucius, pike; Gohius, goby.) 
54. LUCIOGOBIUS GUTTATUS Gill. 
Lveiogobiuff guiiatus Gill, Proc. Ac. Nat. Sci. Phila., 1859, p. 146 (Shimoda; Coll. 
J. Morrow).— GtJNTHER, Cat. Fish., Ill, 1861, p. 152; after Gill. 
Luciogobius guttatus Steindachner, Ichth. Beitr., VIII, 1879, p. 26, Yokohama. 
Head 4^ in length; depth 6i; depth of caudal peduncle 9i; eye 8^ 
in head; snout 4i; D. 13; A. 12; P. IT. 
Body cylindrical anteriorly; caudal peduncle not much compressed. 
Head broad and depressed; the cheek muscles greatly developed, bulg- 
ing outward and upward, making a deep concavity on top of head. 
Eyes small, directed obliquely upward; interorbital space concave, 
the eyes projecting somewhat above its floor. Snout rather pointed, 
its length contained about 3 times in postorbital part of head; lower 
jaw projecting. Mouth almost horizontal; the cleft wide, extending 
to a vertical passing just behind orbit. Teeth minute, in narrow 
bands on both jaws; no canines. Tongue broad, forked at tip. Gill 
openings narrow, extending upward but little above middle of base of 
pectoral; the isthmus very broad, its width about equal to depth of 
caudal peduncle. Inner edge of shoulder girdle without protuber- 
ances. Gill-rakers on first arch represented by slight elevations only. 
Head and body naked; skin of snout wrinkled; lips pendulous; 
anterior nostril with a short tube. No barbels. 
Spinous dorsal absent. The skin in the region which is occupied by 
the fin in other gobies has a peculiar folded structure, shaped some- 
what like a feather, a median elevated ridge, with smaller radiating 
ridges on either side; the latter extending posteriorly along the base 
of soft dorsal. Soft dorsal inserted directly above first ray of anal; 
the distance between tip of snout and insertion of dorsal about equal 
to 3 times length of head; depressed fin falling far short of base of 
