78 Mr. Covcn on the Natural History 
§§ With Eyes on the left side. 
Kite. P.rhomboides.—' This species seems to unite Flat-fishes 
with those which swim on their edge, the under side often 
participating in the colour of the upper; I have seen it 
cover a third part of the under surface. 
Whiff. P. punctatus.—The dorsal and anal fins pass under the 
tail, and are very nearly joined together on the white side. 
This species rarely, if ever, takes a bait. It keeps in rocky 
ground. 
Pearl. P. Rhombus.—This seems to be scarce, at least within 
my observation. 
Carter, or Lanternfish. P.megastoma? Don.—This is the species 
which Jago in Ray's Synopsis has figured under the name of 
Whiff; but it is different from P. punctatus. Teeth in both 
jaws and palate; gill-membrane with seven rays; body 
lengthened and very thin; ventral fins broad ; tail some- 
what round; lateral line very crooked at its commence- 
ment; colour of the upper-side a reddish-brown, with spots 
of a lighter colour round the sides; length about twelve 
inches. It is common, and as food is the worst of the genus. 
It is also called Marysole. 
CHETODON. 
Only one specimen of this genus has come within my notice. 
This was taken at Looe, swimming alive on the surface of 
the water, in August 1821; andas I have not been able to 
refer it to any described species, I subjoin a description. 
It was about seventeen inches long, and, exclusive of the 
dorsal fin, five inches and a half deep; the snout was blunt, 
sloping suddenly above the eyes ; the angle of the mouth de- 
pressed ; the teeth numerous, sharp, incurved, four in front 
of the under jaw very long; the body deep, thin; two dor- 
sal 
