PHILIPPINE MACROUROID FISHES—GILBERT AND HUBBS. 4381 
i?. Six to nine spinous carinae on scales; snout “ shaped 
like a duck’s bill,” its outlines strongly convex; 
orbit, 1.5 in snout; barbel, about 2 in orbit. 
anatirostris. 
yj. Orbit much smaller, 1.35 in postorbital length of head, 
1.9 in snout; 5 to 7 spinous carinae on scales; com- 
pared with C. productus, the snout is longer and 
broader, and much more convex toward tip; barbel, 
Silay INN CONG ON po ee wa ee ea ar ere ee eee ee webert. 
7. Five and one-half to seven rows of scales in a series from 
origin of second dorsal to, but excluding, the lateral line 
series; under side of head completely scaled; distance from 
center of anus to base of ventral longer than the orbit. 
TF. Sides of snout moderately convex; scales on top of head 
similar to those on body, with about 5 spinous carinae. 
commutabilis. 
?. Sides of snout nearly straight; scales on top of head with 
usually but a single median keel, being thus very dis- 
Similarstonunesscales; ofthe! pody=-2 a=" == se japonicus. 
b?. Snout more than twice as long as orbit. 
m. Tip of snout without a long spine; spinous carinae on 
scales of head radiating backward. 
m. Underside of head naked, excepting a small oval patch 
below preopercular angle; body marked with cross bars 
both above and below lateral line______--__~ tokiensis. 
n*, Underside of head completely scaled. 
o’. Interdorsal space scarcely half as long as base of first 
dorsal; dark cross bars above, but not below, lateral 
iT) Gotten ee ee quadricristatus. 
o*, Interdorsal space much longer than base of first dor- 
Sales nodark markings=s. ==) S22 se macrorhynchus. 
m’, Tip of snout with an excessively long spine; spinules on 
-seales of head arranged mostly in quincunx order. 
acutirostris.* 
C*®. Spinules on scales on a very strong median keel, with others in parallel 
rows; anus always immediately before anal fin; second dorsal spine 
shorter than postrostral length of head; body without definite dark 
markings; a natural group of species inhabiting the Atlantic, Indian, 
TING aveSterneLacitic Oceansas 2. =) Ses ee OXYGADUS. 
a’. Under surface of. head completely scaled. 
b*. Orbit larger, more than half length of snout, its length decidedly 
greater than the interorbital width; spinules on scales of head 
moderately rough, several in number on each scute along the 
ridges; sides of snout nearly straight. 
c’. Spinous ridges on scales, 3 to 5, usually 38; scales on top of 
head mostly with a single keel; interdorsal space about equal 
TokbasexOt first. Gorse] mts nee see ae ee ee ee parallelus. 
c*. Spinous ridges on scales, 5 to 7; scales on top of head with 
“stellate” ridges; interdorsal space figured as about twice 
lene thgotenrstsdoLrsal base sss saan kermadecus. 
1The systematic position of this species is questionable; an additional subgenus per- 
haps should be erected for it. 
119404—20—_5 
