We SO BIAS 
Sibirian rivers, are vifited by the Beluga Whale, the common Sturgeon, and the 
Sterlet or Acipenfer Ruthenus, Lin. Syft. 403; but I am informed by Doétor 
Pallas, that they have neither Carps, Bream, Barbels, nor others of that genus, 
nor yet Eels, Si/urus Glanis, Lin. Syft. 501 ; Perea Lucioperca, 4813; or common 
Trout: all which are found in the 4mur, and other rivers which run into the 
eaftern ocean: in the latter, our common Cray-fifh is found. In return, the Si- 
Lirian tivers abound in vaft variety of the Salmon kind, and many unknown to 
us in Europe, which delight in the chilly waters of thefe regions. The common 
Salmon, Br. Zool. iii. N° 143, is one of the fearcer kinds : the Salmo Nelma, Pallas 
Itin. ii. 716, or Salmon Leucichthys of Guldenftaedt, Nov. Com. Petrop. xiv. 531, 
isa large {pecies, growing to the length of three feet : the head greatly protracted : 
the lower jaw much the longeft : the body of a filvery white: fcales oblong: tail 
bifid. P.D.Rad.14. The Salmo Taimen, or Hucho, Pallas, ii. 716, grows to 
the weight of ten or fifteen pounds, and the length of a yard and a half: the 
color of the back is dufky ; towards the fides filvery: the belly white: fpotted 
with dufky on the back: anul fin of a deep red: tail bifurcated: flefh white : 
Salmo Lavaretus, iii. 705, or Gwiniad, Br. Zool. iii. N° 152: Salmo Albula, Lin. 
Syft. 512: Salmo Schokur, Pallas Itin. ili. 7¢5 ; a {pecies about two feet long, not 
unlike the Gwiziad : the Salmo Pidfchian, Pallas Itin. iii. 705 ; about two fpans long, 
broader than the Gwiniad, and with a gibbous back: Salmo Wimba, Lin Syft. 
512: and Salmo Najfus, Pallas Itin. iii. 705 *, are extremely common in the 
Ob. Others fhun that ftill river, and feek the ‘Fenefei, and other rapid ftreams 
with ftony bottoms. Such are the Salmo Lenok, Pallas Itin. ii. 716 +: Salmo 
Oxyrbyncbus, Lin. Syft. 512: and Salmo Autumnalis, or Omul, Pallas Itin. ili. 705 5 
which annually force their way from the fea, from lat. 73. to lat. 51. 40, 
into lake Baikal, a diftance of more than twenty-one degrees, or near thirteen 
hundred miles. The Omul even crofles the lake, and afcends in Augu/? the ri- 
ver Selinga, where it is taken by the inhabitants in great quantities, and is pre- 
ferved for the provifion of the whole year. After dropping its fpawn in the ftony 
beds of the river, it again returns to the fea. The Sahno Aréicus, Pallas Itin. iii. 206; 
and S. Thymallus, or Grayling, Br. Zool. iii. N° 150; may be added to the fifh 
of the Sibirian rivers. The Salmo Cylindraceus, or Walok of the Ruffians, is a 
fith very flender, and almoft cylindrical, with a very fmall mouth, large filvery 
fcales, and the under fins reddifh. ‘This is found only in the Lena, the Kowyma, 
* The Schokur and Na/us are two fpecies of Coregoni, or Salmons, with very {mall teeth. 
+ Voy. en Siberie, i.237. Italfo afcends through the Fenefei and the Tuba to the Mad/bar, a lake 
an amazing diftance in the mountains, 
(aha and 
CILE 
SURPRIZING Mie 
GRATIONS OF 
Fish. 
