SOME FISHES OF ORDER AMPHIPRIONIFORMES.— WHITLEY. 
209 
DD. More than 18 dorsal rays. No transverse bands . . Phalerebus, gen. nov. 
BB. Suborbital with a strong spine directed backwards. PREMNLD2E Premnas Cuvier 1816. 
AA. Less than 50 transverse series of scales. D.xii or more (rarely xi). Base of spinous dorsal 
much longer than that of soft. 
E. Teeth conical, villiform, or subcylindrical ; not compressed. CHROMJD.dE. 
F. Teeth subcylindrical . . . . . . . . . . . . Meccenichthys gen. nov. 
FF. Teeth conical or pointed, sometimes in bands. 
G. None of the opercles serrated. 
H. External teeth of mandible directed outwards . . Hoplochromis Fowler 1918. 
HH. External teeth of mandible not directed outwards. 
I. Second anal spine nearly as long as head . . Dorychromis Fowler & Bean 1928. 
II. Second anal spine slightly more than half length of head. 
J. Each scale of body with 1 to 3 small basal auxiliary scales 
Lepidochromis Fowler & Bean 1928. 
JJ. Body-scales without basal auxiliary scales . . 
Ghromis Cuvier 1814 (syn. Heliases C. & V. 1830). 
GG. Preoperculum, and sometimes suborbital, serrated. 
K. D.xii-xiii. 
L. Ground colour white with 3 dark transverse bands, strongly contrasted 
Tetradrachmum Cantor 1849 (syn. JDascyllus Cuv. 1829 & Pirene Gistel 1848). 
LL. Colour fairly uniformly dark or dusky without strongly contrasted bands 
Pellochromis Fowler & Bean 1928. 
KK. D.xvii Acanthochromis Gill 1863 (syn. Heptadecacanthus Alleyne & Macleay 1877). 
EE. Teeth more or Jess compressed, at least anteriorly. POMACE NTRIDbE. 
M. Lips normal. POMACENTRINiE. 
N. Preoperculum serrated. 
O. Spinous portion of dorsal and anal naked. Suboperculum and interoperculum 
serrated . . . . . . . . . . . . . . Daya Bleeker 1877. 
00. Spinous portion of dorsal and anal scaly. Suboperculum and interoperculum 
entire. 
P. Thirteen (rarely 14) dorsal spines. 
Q. Teeth in jaws biserial. 
R. Snout scaly. 
S. External teeth in jaw^s truncate. Caudal forked 
Pomacentrus Lacepede 1802 (syn. Pristotis Riippell 1838). 
SS. External teeth in jaws with somev^hat rounded tips. Caudal lunate 
Pseudopomacentrus Bleeker 1877. 
RR. Snout naked . . . . . . . . . . Dischistodus Gill 1863. 
QQ. Teeth in jaws uniserial. 
T. Snout scaly. Membrane of spinous dorsal incised and lobed. Caudal 
acutely lobed . . . . . . . . Parapomacentrus Bleeker 1877. 
TT. Snout wbthout scales. Membrane of spinous dorsal neither incised nor 
lobed. Caudal emarginate . . . . Ambly pomacentrus Bleeker 1877. 
PP. Twelve (rarely 11) dorsal spines. 
U. Less than 30 transverse row r s of scales. 
V. Membrane of spinous dorsal deeply incised Hr achy pomacentrus Bleeker 1877. 
VV. Membrane of spinous dorsal neither incised nor lobed 
Eupomacentrus Bleeker 1877. 
