16 
FOUR-HORNED COTTDS. 
nearer the tail; the base of which expands where the caudal 
fin rises fiom it. T.he first dorsal fin rises behind the insertion 
of the pectoral, and is not very high. Second dorsal opposite 
the anal; both of them wide, and at a good distance from 
the tail, which organ is round. Pectoral fins wide, the lower 
rays passing up under the throat; the middle rays reaching 
beyond the termination of the first dorsal. Ventral fins small 
and separate. A row of low tubercles runs along the body, 
from the hinder elevated tubercle of the head to the tail; and 
a row of low spines runs parallel with this, but a little 
separated, to the end of the second dorsal; intermingled with 
several irregular tubercles at the side opposite this second 
dorsal. 
It is probable that the colour of this fish varies as it is 
found in different districts; and the example which came to 
me in spirit from London, and for which I am indebted to 
the kindness of Dr. Gunther and Dr. J. E. Grey, .was of a 
uniform light brown, mottled on the dorsal, pectoral, and 
caudal fins, with dotted points on the lips and gill-covers; 
upper ridge of the tail with minute spines. 
Fin rays pectoral sixteen, first dorsal nine, second dorsal 
fourteen, ventral three, anal fifteen, caudal sixteen in aU. 
