490 British and Irish Ii'shes of Coregonus. 



between the lateral line and the base of the pelvic fin, four lh, 

 one 7, and one 8^. 



Subsp. b. Coregonus pennantii. 



The Gwtniad. 



Coregonus pennantii, Cuv. & Val. Hist. Nat. Poiss. xxi. p. •"' 

 Coregonus clupeoides (part.), Griirith. Cat. Fish. vi. p. 188 (18 

 Day, Fish. Britain, ii. p. 127, pi. cxxii. (1884). 



Depth of body 3f to 4^ in the length, length of head 4£ 

 to 5. Snout nearly as long as or a little longer than eye, 

 the diameter of which is 3§ to 5| in the length of head ; inter- 

 orbital width 34 to 3§ in the length of head. Snout vertically 

 truncated, with the lower jaw included within the upper; 

 maxillary extending to or a little beyond the vertical from 

 the anterior edge of eye ; 21 to 23 gill-rakers on the lower 

 part of the anterior arch. 76 to 90 scales in a longitudinal 

 series, 9 or 10 in a transverse series from origin of dorsal fin 

 to lateral line, 8 to 10 between lateral line and base of pelvic 

 fin, 22 to 24 round the caudal peduncle. Dorsal fin with 10 

 branched rays : origin nearer to end of snout than to base of 

 caudal fin ; longest ray 4 to | the length of head. Anal with 

 11 to 13 branched rays. Pectoral f to | the length of head, 

 extending from a little more than ^ to a little less than § of 

 the distance from its base to that of the pelvics, which are 

 inserted below the middle of the dorsal. Caudal peduncle 

 longer than deep, its least depth ^ or a little more than ^ the 

 length of head. Silvery, back darker ; fins blackish. 



Lake Bala, Merionethshire. 



Six spirit-specimens, 210 to 400 mm. in total length, four 

 of which have been recently presented by Sir Watkin Wynn 

 and Mr. William Owen, and a skin from Jardine's collection. 



Of these seven examples, four have 11 branched rays in the 

 anal fin, two 12, and one 13 ; five have 9 scales between the 

 lateral line and the base of the pelvic fin, one 8, and one 10. 



4. Coregonus oxyrhynchus, Linn. 

 The Houting. 



Coregonus oxyrhynchus, Giiuth. Cat. Fish. vi. p. 183 (1866) ; Dav, 

 Fish. Britain, p. 126, pi. cxxi. fig. 2 (1884). 



Hab. Coasts and rivers of Europe from Scandinavia to 

 Holland. 



This species attains a length of 400 mm. and is often seen 

 on the London market : Day records it from Lincolnshire, 

 the Med way, and Chichester. 



