No.lLMi. GOIilOTD FISHES OF JAFAX—JORDAX AND SNYDER. 
58 
only the edge of tip free. Gill openings restricted laterally; isthmus 
very ))road: its width almost equal to depth of caudal peduncle; edge 
of shoulder girdle without papilhv. Gill-rakers slender. 
Head naked; no bar})els on chin; anterior nostrils with tubes. Bod}' 
with large, finely ctenoid scales; those on nape and breast minute. 
Dorsals separate, though close together; spines slender, the anterior 
ones highest; rays somewhat higher than spines, growing gradually 
shorter from l)efore backward. Anal inserted below third or fourth 
dorsal ray, extending post(M'iorly as far as dorsal, both falling far short 
of base of caudal. Caudal large, hroadh' roiuided. Pectoi-al rounded 
posteriorly, its upper edge with conspicuous, free filaments. Ventrals 
nearly reaching vent; free posteriori}'. 
Head and body clouded with bi'ownish Idack. Spinous dorsal with 
a broad, l)lackish blotch; fin with a wide, white margin; the first spine 
with 4 small, black spots. Soft dorsal with narrow, zigzag, dusky 
bands; the spine with ?> small, elongate, l)lack spots. Upper two- 
thirds of caudal with ol)long, dusky spots; lower third without marks. 
I 
Fig. 4.— Gobius pcecilichthys. 
Pectoral with indistinct, dusky spots arranged in vertical rows. 
Ventrals and anal with a little dusky color; the latter with a white 
margin. 
The species is represented by 2 specimens, the type No. 6448, 
Leland Stanford Junior University Museum, and another very small 
one from Misaki, Sagami. 
Measurements. — Length expressed in millimeters, 48; depth ex- 
pressed in hundredths of length, 21; depth of caudal peduncle, 13; 
length of head, 29; length of snout, 10; length of maxillary, 11; 
width of interorbital space, 1; diameter of orbit, Ti; distance from 
snout to spinous dorsal, 37; to soft dorsal, 55; height of longest 
dorsal spines, 14; rays, 17i; distance from snout to anal, 51; height 
of longest anal rays, 15; length of caudal peduncle, 24; length of 
caudal fin, 25; length of pectoral, 25; of ventral, 23. 
PmeiUchthys^ noiKikoz variegated; zj^v? fish, name of a genus of 
American Percidte, Avhich this fish much resembles. 
