ARTIFICIAL KEY. 29 
Series II. Ventrau Fins PRESENT, THORACIC OR JUGULAR. 
A, Eyes unsymmetrical, both on same side of head. . PLEtRONECTIDs#, 89. 
AA, Eyes symmetrical. 
&. Gill openings in front of pectorals. 
C. Body more or less scaly, or armed with bony plates. 
D. Ventral fins united into one; no lateral line; gill membranes 
joined toisthmus. . . . . . . » « » + GoBIIDs, 82, 
DD. Ventral fins separate. 
£E. Top of head with a large eee modified from the spinous 
dorsal. ee . » EcuHeEnerpip.s, 50, 
EE. Top of head without sueldine- disk 
F. Ventral rays, I, 5. 
G. Suborbital with a bony stay which extends across the cheeks 
to or towards the preopercle; ; cheeks sometimes entirely 
bony. 
Hf. Pectoral fin with 2 or 3 lower rays detached and separate. 
TRIGLIDA, 76. 
HH. Pectoral fin entire; slit behind fourth gill small, or 
wanting. 
I, Dorsal spines, 9 to 17; anal spines three; eyes lateral. 
Scorr2nip#, 72, 
IT. Dorsal spines, four; eyes superior. UraNoscopiD™, 81, 
GG. Suborbital stay wanting; cheeks not mailed. 
XK. Dorsal spines all or nearly all unconnected by membrane. 
L. Body elongate, subterete. . . . . Exvacatips, 51. 
LL. Body oblong or ovate, compressed. 
M, Caudal peduncle very slender, the fin widely forked. 
CARANGID&, 56. 
MM, Caudal peduncle stout, the fin little forked. 
STROMATEID#, 58. 
KK. Dorsal spines, if present, mostly connected by membrane. 
N. Dorsal and anal eachwith 4 or more finlets; scales minute. 
ScomBrip#, 55. 
NN. Dorsal and anal without finlets, or with but one each. 
O. Throat with two long barbels . . . . MuLitp.®, 67 
00. Throat without barbels. 
P. Anal preceded by two free spines (these often obsolete 
with age). 
Q. Scales very small, cycloid. . . CARANGIDA, 56. 
QQ, Scales moderate, ctenoid. . .Pomaromips, 57 
PP. Anal without free spines. 
&. Tail with a fleshy keel on each side. 
CARANGID&, 56. 
RR. Tail not keeled. 
S. Dorsal fin very long, without distinct. spines; 
caudal deeply forked. . CorypHanipa, 59. 
SS. Dorsal fin with distinct spines; gill membranes 
free from isthmus. 
T. Vomer with teeth, 
U. Anal spines none; eyes on tup of head. 
Uranoscopip#, 81, 
UU. Anal spines, one or two. 
