24.6
; =THEÏ_BIOLOGY or FISHES
:: ' ;”;î
,
-
the
Perch and
Sander (Lucioperca). The
_
.Perch00curs in Britain and the Rhine district, but Lucio—
perca
is found in neither; its home lies in the rivers of’
é
Eastern Europe draining into the Caspian and Black Sea.
Yet it occurs in Scandinavia, Canada, and the StatesÇ
Simi,
Ï
lady, the Mud—sh (Umbra) occurs nowadays only in
waters of Austro—Hungary (U. crameri) and in
°
swamps
of Canada and the north—eastern States (U. limi).
,
The occurrence of these forms in places so far
'
indicate that Scandinavia has had an independent con—_
.
,
,
_
‘
e,
—
,
Q”°"‘<ä.
"'
—
'
'
,
,:
'
j
,
v
a”
_
f
_
'
Go.—Distribution of the Pike family.
(From Boule'ngér.)
,
nection With Greenland
this With North
,
Ainerica
_{
that beWéenNew£oundlarid and Britain,
_
T he
—In Eurasia it.
:
from81bena
to
_
_
:'
andIç€landh
LinËthe
but
f ,
isfound IllAlg1e1s—anocwlrenœ
——
_;
.
; * sand—r ih
ais
andïçNêew
*ÂY°Ëk>
ï Ï
.
îi=.
…
'
f
(Gspmach1a) ijS n0tknoWn0mlceland orNorthAmerrca,
.
:
b‘“ 1î0œursmtheFæmes