544 THE OCEAN WORLD. 



Tipper jaw being longer than their under one. They attain the thick- 

 ness of a man's leg, and are sometimes two yards in length. The 

 conger-eel is frequently found in salt marshes, but its flesh is held in 

 little esteem. 



2. SUB-BRANCHIATI. 



The fishes of this order are characterised by vertical fins being 

 attached under the pectorals, and immediately suspended to the 

 shoulder bone. Exclusively marine fishes, they inhabit every region 

 of the globe. The order comprehends three families : I. Discobo- 

 lidde ; II. Pleuronectidse, or flat fishes ; III. the Gadidte. 



i. DISCOBOLUS. 



The family of Discobolidse consists of a small number of species 

 characterised by their ventral fins being discoform, as in the sea-snails 



Fig. 367. The Sea-Snail (Liparis). 



(Liparis), in which the lengthened mucous body is without scales, but 

 with one long dorsal fin ; the pectoral and ventrals forming one disk, 

 as in Fig. 367, or the Suckers (Lepidog aster), where the pectorals and 

 ventrals form two disks. 



In the Lump-fish, Cy dopier is (Fig. 368), the disk formed by the 

 ventrals forms a sort of sucker, by which the fish attaches itself to the 

 rocks ; while the Ecliineis is remarkable for the disk-like sucker with 

 which it is provided. 



The Echineis remora is an inhabitant of the Mediterranean, and 

 abounds in the Indian and Atlantic Oceans. It is furnished with a 



