798 



SCANDINAVIAN FISHES. 



])oint uf the lower jaw, tli(juy'h it tits iiitu a shallow in- 

 dentation at the ti]) of tlie snout, and projects distinctly 

 beyond the latter when the inoiitii is open, is not pro- 

 minent when the mouth is closed. The jaws are some- 

 what larger, the length t)l' tlic upper jaw from the tip 

 of the snout measuriiifr about ol — i^fy % of that of the 

 head, and the length of tlie lower jaw al)Oiit 41 — 45 % 

 of the same. The dorsal tin is situated as a rule some- 

 what fartiier forward, its beginning lying at a distance 

 from the tip of tlie snout of about .50 — 47 % of the 

 length of the body, and the distance between the tip 

 of tlie snout and the \entral tins Ijeing about 85 — DO 

 % of that between the same point and the dorsal tin. 

 This fin is also both higher — its longest ray measures 

 about lit or 20 % of the length of the body — and 

 longer, the length of its base being about ' <, (ir8 — 

 H'o "<A of that of tlie body. The anal tin is also 

 higher; its longest ray measures about 15 — 14 % of 

 the lengtii of the body. 



The most striking difference from the Bleak ap- 

 pears, however, in the coloration. Tiie ground-colour 



is indeed tlie same; but the lateral line, which during 

 life is itself more or less red, is included between two 

 black streaks running along and close to it. These 

 streaks are formed by two small, elongated, black spots 

 on each scale in the lateral line, one above and one 

 below the opening duct. At the base of the scales on 

 the sides of the body too, at least for 3 or 4 rows 

 above and sometimes also below the lateral line, there 

 appear somewhat larger, triangular spots, one on each 

 scale, apparently forming longitudinal streaks along 

 the sides. 



The continental range of the Sperlin-Bleak in 

 Central Europe is about the same as that of the 

 Bleak, and the species occurs in similar localities, but 

 not in sucli numbers. The Germans call it Alaynl- 

 blecke, Schiisslaiibe, ScJuwider, etc.; in France it is most 

 commonly known as the SpirJin {EiwrJan de Seine). 

 It has only once been found within the limits of the 

 Scandinavian fauna: Feddeksen records (1. c.) the tak- 

 ing of a specimen in Lake Scanderborg (.Intland) in 

 July, 1877. 



Genus LEUCABRAMIS. 



Bc'/iiuiiufi of the dorsiil fin sifiiafcd at a dtstinue from the tip of the s)ioi(t less than three times the huf/th of 



tlie head. Leuf/th of the Jnise of the anal fii less than \ -^ (17^ ., — IH "o) of that of the hodij. and also less than 



that of the head. J'ectoral fns shorter than the lonr/est raij in the ilorsal fn. 'rip of the snout projeetini/ in 



front of the month. Scales frinli/ attached, Lenciscine in texture. 



Among the Abramidiiie species hitherto described 

 from Europe there are two — probably, ho\vever, varie- 

 ties of the same species — Ahramis rimha and Ahramis 

 elonfjafiis {melanops), which seem to lie assigned by the 

 development of the anal tin to a place beside Alhurrms. 

 The form of tlie dorsal fin — comparatively long and 

 low — also divides them from the true Breams; but the 

 most impoi'tant difference consists in a carina, formed 



by the bent scales of the median line, at the dorsal 

 edge of the tail behind the dorsal tin. One of these 

 two species, if it is still to be regarded as such — 

 SiEBOLD suggests that it should be interpreted as a 

 variety due to a constant life in rivers, without mi- 

 gration to lakes or the sea — belongs to Russia and 

 Germany (S. E. and X.). The second is our well- 

 known 



