20 MR. F. DAY ON THE FISHES OF COCHIN, [Jan. 10, 
PoLYNEMUS TETRADACTYLUS, Shaw. 
B.vi, DS. P-l6iv. V.t..A.2. C,17, Eb go. Ui, tae 
Length of specimens from 9,8; to 15 inches. 
This fish grows to a very large size; and in the months of De- 
cember and January numbers are captured by trolling. The bait is 
a small fish; and the hook is attached to the line by a piece of 
twisted brass wire. The line is thrown, direct from the hand, a dis- 
tance of at least 20 or 30 yards into the breakers. Fish of several 
feet in length are thus caught by coolies after their working-hours. 
Common, and excellent eating. 
SPHYRENA JELLO, Cuy. & Val. 
Cheelahoo (Mal.). 
Boge D5 1/9. Ps 14. Vind bk V8 die 
Length of specimens from 6,2; to 83%; inches. 
TRICHIURUS MALABARICUS, Day, sp, nov. 
By. D, 1g2. abe 
_ inches. 
Length of specimens from 10,3; to 12 inches. 
of head ........ 1,4, or one-seventh of total length. 
of pectoral...... 335, or one twenty-fourth of total 1. 
Height of body ........ 375, or one-seventeenth of total length. 
of head paisa! «\2 .» 72 or one-twentieth of total length. 
Diameter of eye 55, inch, or + of length of head; ;4; inch from 
end of snout, 2; apart. 
Lower jaw the longest. Superior maxillary bones reach to oppo- 
site first quarter of orbit. Operculum finely lineated, extends back- 
wards to above the pectoral fin. Przeorbital large, entire, lineated. 
Opening to nostril large, rather close to the anterior margin of the 
orbit, the upper margin of which is nearly horizontal, and close to 
the profile of the head. 
Teeth. In intermaxillary bones three large canines ; the anterior 
the longest, curved, directed forwards and downwards, barbed at its 
extremity ; the two posterior ones, arising from the posterior margin 
of the intermaxillaries, are curved backwards and downwards; they 
are also slightly barbed at their extremities. An external row of about 
five fine teeth in intermaxillaries. A single row of about seven large 
pointed teeth, flattened from side to side, in maxillaries. In lower 
jaw a single row of pointed teeth, similar to those in superior maxil- 
lary, but smaller. 
Dorsal fin commences to arise opposite commencement of opercu- 
lum. Spines weak ; they gradually increase in length until they are 
3,ths of an inch, or nearly as long as the height of the body. Anal 
spines truncated at their extremity, and only visible with the aid of 
a magnifying-glass. 
Lateral line curves downwards behind the pectoral, and runs at 
