84 CLASS IV.» ORDER Iil. 
nished above with a flat, ovate, transversely sul- 
cated shield; gill-membrane six-rayed ; body 
without scales. 
Corypy#na, head sloping suddenly down- 
wards ; gill-membrane five-rayed ; dorsal-fin the 
length of the back. 
Macrovurvus, (imminset,) head large; eyes 
large ; body at the hind part attenuated into the 
tail. | 
Gorius, (goby,) head small; eyes approximat- 
ed ; gill-membrane four-rayed ; ventral-fins unit- 
ed into the form of a funnel. 
Goxiomorus, habit as the Gobius ; with vent- 
ral-fins distinct. 
Corrus, (bullbead,) head broader than the bo- 
dy, spiney; eyes vertecal and having a nictitating 
membrane ; gill-membrane six-rayed. In most 
species the body is without scales ; attenuated to- 
wards the tail, and with two dorsal-fins. 
Scorrzna, head large, aculeated, cirrose, ob- 
iuse, without scales, sub-compressed ; eyes near 
each other ; teeth in the Jaws, palate and throat ; 
gill-membrane seven-rayed ; body fleshy ; dor- 
sal-fin single, with the rays of the forepart spiny. 
Zeus, (dory,) head compressed, sloping down; 
upper lip arched by a transverse membrane ; tongue 
subulate (in most species); body compressed, 
broad, sub-rhomboid, thin, and of a bright colour ; 
gill membrane with seven perpendicular rays, the 
lowest transverse ; dorsal fin (in most species) 
having projecting filiform rays. 
Pievronectsés, (floander, holibut, sole,) eyes 
both on the-same side of the head ; body compress- 
ed, one side representing the back and the other 
the abdomen. 
