60 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
Tubular scales 44 in lateral line to caudal base, not continued on 
last; 5 scales above to spinous dorsal origin, 4 above to soft dorsal 
origin, 14 below to anal origin, about 19 predorsal forward until 
opposite hind pupil edge. On head small scales on postocular, pre- 
dorsal, and cheek, on last in seven transverse rows to angle of pre- 
opercle keel and scales little larger than on opercle. Spinous dorsal 
with basal scaly sheath at each spine and small scales on bases of 
all rayed vertical fins and pectoral base. Small scales also on chest 
and breast, and on inner ventral bases. 
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Ficure 8.—Rhomboserranus gracilispinis, new species: Type (U.S.N.M. No. 99519). 
D. IX, 10,1, fourth spine 214, in total length of head, first branched 
ray 214; A. III, 7,1, second spine 224, second ray 3; caudal 114, well 
emarginate behind; least depth of caudal peduncle 324; pectoral 124, 
rays 1, 15; ventral rays I, 5, fin 124 in total head length. 
Color in alcohol largely uniform brown, little paler below. Iris 
pale to whitish. Soft dorsal, anal, and ventral dark to gray-black 
terminally. Inside gill opening and mouth cavity blackish brown. 
Characters of distinction largely contained in the generic account. 
Type.—U.S.N.M. No. 99519. D. 5278. Corregidor Light N. 27° 
K., 27.25 miles (lat. 18°58’45’”” N., long. 120°21'35’” K.), China Sea, 
vicinity of southern Luzon. In 114 fathoms. July 14, 1908. Length 
80 mm. 
Paratypes—U.S.N.M. No. 99520. D. 5273. Corregidor Light N. 
27° E., 27.25 miles (lat. 18°58’45’” N., long. 120°21'385’’ E.), China 
