striae 5; apical denticles 65 to 85; circuli very fine; 
lateral line more convex than dorsal profile; tubes in 
lateral line simple, large, and 3 or 4 scales behind last 
to caudal peduncle. Third dorsal spine 1 to 1 2/3 in 
head; last spine 1 7/8 to 2; fourth dorsal ray 1 1/2 to 
1 2/3; second anal spine 1 3/4 to 1 7/8; fourth anal ray 
1 2/5 to 1 1/2; caudal forked, rather wide lobes pointed, 
1 to 14+1/8; pectoral 11/6 to 1 1/4; ventral 1 to 1411/4. 
Color in alcohol whitish generally. First broad 
blackish band from predorsal down including hind half of 
interorbital, then below eye including preorbitsal and man- 
dib,e before hind maxillary end; décond band from fifth 
te eighth dorsal spines down to pectoral origin and axil to 
same of ventral; third band from last dorsal spine, most of 
soft dorsal, front of caudal peduncle and soft anal'to near 
end of spinous anal. Spinous dorsal blackish-brown broadly 
over terminal portion and hind edges of soft dorsal ard anal 
whitish. Caudal and pectoral whitish. Ventral blackish-brown, 
Length 22 to 78 mm, One from Tonge, and fourteen without defi- 
nite locality likely Polynesian, 
The ahove agree with material in the Academy from Tahiti, 
Samoa and the Philippines, though an example recorded as D. 
aruanus by Fowler from Sumatran?” is properly D. arcuatum 
Cantor. Whe freshly received in arrack it was pearly-white. 
189 
Journ, Acad, Nat.Sci, Phila., (2) vol. 12, 1904, p. 533. 
