CYPRINUS.] PISCES (OSSEI) MALACOPT. 411 



91. C. Lancastriensis, Shaw. (Graining.) Elongated; 

 depth one-fifth of the length : back and upper part of the 

 sides pale drab : fins yellowish white. 



C. Lancastriensis, Shaw, Gen. Zool. vol. v. p. 234. Leuciscus 

 Lancastriensis, Yarr. in Linn. Trans, vol. xvn. p. 7. pi. 2. f. 1. 

 Graining, Penn. Brit. Zool. vol. in. p. 367. Id. (Edit. 1812.) 

 vol. in. p. 484. Yarr. Brit. Fish. vol. i. p. 355. 



LENGTH. From seven to nine inches. 



DESCRIPT. (Form.) " Length of the head, compared with the whole 

 length of the head, hody, and tail, as one to six : depth of the hody, com- 

 pared with the whole length, as one to five : nose more rounded than in 

 the Dace; the upper line of the head straighter : eye rather larger : the 

 inferior edge of the preopercle less angular : the dorsal line less convex : 

 dorsal fin commencing exactly half-way between the point of the nose 

 and the end of the fleshy portion of the tail ; the first ray short ; the 

 second longest : pectorals longer in proportion than in the Dace : vent- 

 rals placed, on a vertical line, hut little in advance of the first ray of the 

 dorsal fin : anal commencing, on a vertical line, under the termination of 

 the dorsal fin-rays when that fin is depressed; the first ray short; the 

 second longest ; the last douhle : the fleshy portion of the tail long and 

 slender; the caudal rays also long and deeply forked : all the fins a little 

 longer than those of the Dace : scales of a moderate size, rather larger 

 than those of the Dace, the diameter across the line of the tuhe greater, 

 and the radiating lines less numerous ; the number in the series forming 

 the lateral line forty-eight ; those in an oblique line up to the base of the 

 dorsal fin eight, and downwards to the origin of the ventral fins four: 

 lateral line descending from the upper edge of the opercle by a gentle 

 curve to the middle of the body, and thence to the centre of the tail 

 in a straight line : number of fin-rays, 



D.9; A. 11; C. 19; P. 17; V. 10. 



(Colours.) Top of the head, back, and upper part of the sides, of a pale 

 drab-colour, tinged with bluish red, separated from the lighter coloured 

 inferior parts by a well-defined boundary line : irides yellowish white : 

 cheeks and gill-covers shining silvery white, tinged with yellow : all the 

 fins pale yellowish white." YARR. 



Originally observed by Pennant in the Mersey near Warrington. 

 Mr. Yarrell has since obtained it from the same locality, and pointed 

 out its claims to rank as a distinct species. According to this last gen- 

 tleman, it is met with in considerable abundance in several streams 

 connected with the above river; but is not known to exist in ponds. 

 In its habits and food it is said to resemble the Trout. Weight not 

 commonly exceeding half a pound. 



** Dorsal above the space intervening between the ventrals 



and anal. 



92. C. Cephalus, Linn. (Chub.) Elongated: body 

 thick ; snout broad and rounded ; upper jaw longest : 

 dorsal and anal with ten rays : pectorals, ventrals, and 

 anal, pale red. 



