32 
NEW OB LITTLE KNOWN FISHES 
Interorbital region feebly convex, its width 2f in the diameter of the 
eye. Maxillary extending to well behind the pupil, its length If in 
that of the head, the width of its distal extremity K- in the diameter 
of the eye. Preopercle as in O. australis, but with 5 much enlarged 
denticles at the angle ; opercular spine longer and stronger than in 
that species. Median ridges of head in contact on the snout ; 
supraciliary ridges denticulated in front and behind ; all the cephalic 
ridges terminating in a strong spine ; lower branch of temporal 
ridge with two postmedian spines ; otherwise as in O. austrah's. 
Dorsal fin inserted above the opercular membrane ; 3rd. and 4th. 
spines equal and longest, as long as the eye, 2-f in the length of the 
head and If in that of the 3rd. and longest, ray ; last dorsal spine f 
of the longest. Anal fin originating below the 10th. dorsal spine, 
the 3rd. spine longer and much stronger than the 4th., its length 
24- in the head and 1^ in the 2nd. ray ; both spines and rays longer 
than those of the dorsal. Middle caudal rays 2f in the upper lobe, 
which is f of the length of the body; least depth of caudal peduncle 
If in the diameter of the eye. Pectoral fin not extending to the 
vertical from the vent, If in the length of the head. Ventral as 
long as the pectoral, reaching the vent. Grill-rakers 14 + 28, the 
longest about f the diameter of the eye. Yellowish brown above, 
each of the scales with a broad violet band posteriorly ; sides and 
lower surfaces yellow, the edges of the scales darker, [spina, spine; 
ceps, head : the cephalic ridges being spinose]. 
Type in the Queensland Museum. 
Described from a specimen, 133 millimeters long, collected in 
the South Sea Islands by Capt. Charles P. Browne, and presented by 
him to the Museum. 
HOLOCENTRTJS ANGUSTIFRONS sp. no v. 
NARROW-FRONTED SQUIRREL-FISH. 
D. xi 11 ; A. iv 7 ; P. 12. Sc. 4—41—8. Depth of body 3f r 
length of head 2f in the length of the body. Snout deeply emargi- 
nate in front, If in the diameter of the eye, which is 2| in the 
length of the head. Interorbital region slightly concave, its width 
equaling the snout. Maxillary extending to a little beyond the 
middle of the eye, its length 2f in that of the head, the width of 
its distal extremity f of the diameter of the eye ; premaxillary 
processes extending to between the anterior borders of the pupils, 
their length 5 of the diameter of the eye ; lower jaw the longer ; 
preorbital strongly serrated, the anterior spine very stout and 
