COREGONIDS 359 



Lough Melvin near Donegal Bay ; and there are other local species or races. An 

 allied species, the hucho (S. hucho), belongs exclusively to the Danube and 

 its tributaries, 

 coregonids or The so-called coregonids form a group of fresh-water salmon- 



False Salmon. ]ik e fish found in cold fresh waters. Among the species of this group 

 Coregon its oxyrhynchus inhabits the North Sea, and ascends the rivers flowing into 

 the same only for spawning. It has a projecting upper jaw, and is silvery white 

 in colour, shading into darker on the back, and nearly black on the tip of the 

 snout. The Baltic marane (0. lavaretus), on the other hand, inhabits the Baltic 

 where it spawns in the bays and gulfs ; it has a truncated upper jaw and is greyish 

 green on the top and lighter on the sides, and silvery grey beneath, its fins being 

 bordered with black. The true marane (C. marcena), again, which inhabits Lake 



"^>C 



WARTMAXN S FALSE SALMOS. 



Madu in Pomerania, is greyish black on the back, bluish on the sides, and white 

 beneath, with grey, black-bordered fins. It measures from 16 to 20 inches in 

 length. Another kind (G. ferus) lives in the deeper Swiss lakes, as well as those 

 of upper Austria and Bavaria ; in colour it is blue, shading to black on the back, 

 with a silver sheen on the sides and below, the fins being grey with dark tips. 

 It measures from 16 inches to 2 feet in length. In the depths of Lakes Constance 

 and Ammer lives the kilch (C. hiemalis), which has much the same colouring as 

 C. ferns, but is paler and smaller. Another species, C. uxtrtmanni, lives chiefly in 

 the deep lakes of the north Alpine region. Of other species restricted to particular 

 localities there are C. steindachneri of Lake Traun, C. sirfzeri of Lake Pfaffikon, 

 and C. macrophthalmus of Lake Constance. The so-called pigmy marane 

 (C. albula), which is only 6 inches long, inhabits the lakes of Scandinavia, and 

 the deeper inland lakes of the Baltic plateau from Holstein eastwards to the 

 interior of Russia. The gwyniad (0. clupebides) of Bala Lake, North Wales, the 

 powan (0. microcephalus) of Loch Lomond, and the pollan (0. pollan) of Lough 



