Bleckish-brown band begins on first three dorsal spines and 
extends down to mandible, including eye, This band also joins 
its felloe on upper side of head in hind interorbital space 
and on all of predorsal. Another broad blackish-brown band 
crosses spinous dorsal, inclusive of fifth to ninth spines, 
down to ventral bases, also including pectoral base. Ventral 
entirely blackish-brown, Third broad band begins in front part 
of soft dorsal and extends down to include greater portion of 
anal. Upper portion of spinous dorsal dusky. Caudal gray-dusky 
basally. Hind anal rays tipped whitish. Yectoral grayish. fris 
dull orange. Peritoneum dusk;-gray. Length 70 mm, 
D. arcuatum differs from D. aruanus largely in the first dark 
band encroaches on Pine’ 4 dorsal spines and within 2 scales of 
second dark band, Our Sumatran example does not show the white 
predorsalas indicated by Bleeker??? 
190 
Tetradrachmum arcuatum Bleeker. Atlas Ich., vol. 9, 1877, 
Lo Pe ay Paes o 
Dascyllus reticulatus(Richardson),. #1. 
Head 3 to 34; depth 1 2/5 to 1 3/5; D. XII, 14 or 15; 
| Ss Bae 12 to 14; scales 18 OR 19 in upper arch of lateral line 
and 8or 9 pores in horizontal section; 4 or 5 scales above late- 
eral line to spinous dorsal origin, 2 or 3 to soft dorsal origin, 
11 or 12 below to spinous anal origin; 32 predorsal scales; 
snout 3 to 3 2/5 in head from upper jaw tip; eye 2s to 2 3/4; 
interorbital 2 1/4 to 2 3/4, 
