194 BRITISH FRESHWATER FISHES 



Chevin and Chavendcr are equivalent to the French 

 Chevaiiic, probably from cJicf^ a head ; Loggerhead 

 needs no explanation. The north-country name 

 Skelly seems to be only a variant of Sche/ly, which 

 is the name of the white-fish found in Ullswater and 

 Haweswater ; these names seem to have reference 

 to the conspicuous scales. 



The Dace {Leuciscus lenciscus) is closely related 

 to the Chub ; it is a rather slender fish, the greatest 

 depth of the body measuring from one-fifth to not 

 much less than one-third of the length to the base 

 of the caudal fin. The head is shorter, the inter- 

 orbital region narrower, and the mouth smaller than 

 in the Chub. The scales number forty-seven to 

 fifty-four in the lateral line, eight or nine in a 

 transverse series from the origin of the dorsal fin 

 to the lateral line, four or five between the lateral 

 line and the base of the pelvic fin. The dorsal fin 

 has seven or eight branched rays, originates above 

 the base of the pelvic fins, and has the free edge 

 concave; the anal fin has seven to nine branched 

 rays and has a concave margin, in striking contrast 

 to the rounded anal fin of the Chub. The colora- 

 tion is silvery white ; the back, with the dorsal and 

 caudal fins, is greenish or brownish ; the lower fins 

 are whitish, sometimes tinged with red. 



The Dace is found all over Europe north of the 

 Pyrenees and the Alps, and ranges throughout 

 Siberia ; it inhabits most of the English rivers and 

 those of Wales, except in the west, but is absent 

 from Scotland and Ireland. 



This is a small species, rarely growing to much 

 more than a foot long ; specimens of I lb. weight 



