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PROCEEDINGS OF THE NATIONAL MUSEUM. 
vol.. XXIV. 
the 6 anterior ones evenly spaced; the. distance between the last 2 about 
twice that of the others; rays of soft dorsal growing successively 
longer toward posterior end of fin; the last rays when depressed just 
reaching bases of upper caudal rays. Anal inserted below base of 
third dorsal ray; the first ray short; the others successively longer to 
the fourth, which is about twice as long as the first; the fin when 
depressed not reaching so far posteriorly as does the dorsal. Caudal 
rounded. Pectoral round, extending almost to a vertical through 
posterior end of base of spinous dorsal; the upper edge without fila- 
mentous ravs. Ventrals free from body posteriorly; their tips reaching 
a point halfwa}' between base of fin and insertion of anal. 
Color in alcohol pale olive gray; sides of body with 6 or 7 narrow, 
dark, lateral cross-bands, the upper and lower of which are indistinct; 
on the anterior half of body all but 2 of the bands fade out and dis- 
appear; head dark, covered with small, closely crowded, light spots. 
Fig. 24. — Tridentiger bucco. 
Dorsals and anal edged with black; the color more intense in the region 
of the first and second dorsal spines; soft dorsal with an indistinct, 
narrow, dusky horizontal band near the middle. Caudal dusky; black 
spots on interradial membranes. Pectorals and ventrals dusky; the 
former with a light, vertical band at base. 
Description of t3'pe No. 6459, Leland Stanford Junior University 
Museum. Localit}^, Misaki, Japan. We also have specimens from 
Tokyo. 
Some other specimens from the type locality are a little lighter or 
darker in color; some have the small caudal spots arranged in more 
or less distinct wav}", vertical lines; others have the soft dorsal and 
anal narrowly edged with lighter color. 
T. hucGo is closely related to T. ob.scurus. It is easily distinguished 
})y its larger mouth, broader head, smaller eye, and smaller scales; the 
latter species has al)out 36 scales in a lateral series. 
{Bucco, thick-cheeked.) 
