GENERA AND SPECIES. gl 



brown in colour, with dark markings on the back, and white below, 

 the fins being banded. It is 3 inches long, lives where the bottom 

 is muddy, and makes a guttural noise when touched. 



Conger. Plate xxii. MURJSNID&. 



167. vulgaris, CONGER. Head large; eyes large; upper jaw longer 

 than lower ; teeth conspicuous. 



The Conger has the vertical fins continuous, the rays 

 of the united dorsal, caudal, and anal numbering between 500 and 

 550 ; in the pectorals there are from 16 to 19 rays ; there are no ven- 

 trals. The dorsal starts from the tip of the pectoral, the anal from 

 the middle of the body. The tail is prehensile. The mouth reaches 

 the hinder edge of the eye. In colour the Conger is dark grey above 

 and lighter or even quite white below, and it has white spots along 

 its lateral line. It attains a length of 7 or 8 feet, and shelters among 

 rocks in deep water, feeding most actively at night, generally on flat 

 fish. Like young eels it can swim backwards as well as forwards, 

 and tail first escapes from the lobster pots it robs of their bait. 



Coregonus. Plate xxvii. SALMON ID JE. 



214. oxyrhynchus, HAUTIN. Snout projecting. 



215. clupeoides, GWYNIAD. Snout truncated. 



216. vandesius, VENDACE. Lower jaw the longer. 



217. pollan, POLLAN. Jaws equal ; snout not truncated. 



The Hautin has two dorsal fins, in the first it has 14 or 15 rays, 

 the second is adipose ; in its ana.! it has i.;. or 15 rays, and there are 

 20 in its caudal ; in its pectorals it has 15 or 16, and in its ventrals 12 

 or 13. The first dorsal is nearer to the snout than to the base of the 

 tail, and the second dorsal is slightly behind the beginning of the 

 anal. In the lateral line there are from 75 to 80 scales. The 

 mouth extends to the first third of the eye, and the upper jaw, which 

 ends in a conical black snout, is the longer. It is a sea fish entering 

 fresh water, and rather rare. In colour it is grey above and silvery 

 below, and in length measures from 7 to 14 inches. 



The Gwyniad has two dorsals, the second of which is adipose, 

 the first having from 13 to 15 rays ; the anal has from 13 to 16 

 rays, the caudal 19 ; in the pectorals there are 17 rays, and in the 

 ventrals n or 12. The ventrals are below the middle of the first 

 dorsal. In the lateral line there are from 73 to 90 scales. The 

 mouth extends to the first third of the eye, and the snout is cut 

 off short and square. It is the silvery fish with darkish fins, 

 which is frequently called the freshwater herring, and is hardly 

 ever found in running water. It is confined to some of the lakes 

 in North Wales, the North West of England, and Loch Lomond, 

 and attains a length of 16 inches. 



The Vendace has two dorsals, the second being adipose, the 

 first having n rays; in the anal there are 13 or 14 rays, in the 

 caudal 23; the pectorals have 15 or 16, and the ventrals n. The 

 first dorsal begins half-way between the snout and the second 

 dorsal ; the ventrals are under the middle of the dorsal. In the 



