78 Mr. Couch 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. 



Ch;etodon. 



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 ; and as 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 



