’
GENERAL :CHARACTERISTICS
3
11
.
'
abdominal cavity and
_
frequently,$ as in the:E€ls,' never
develop at all. The pee‘çofals are _m0re
their
appearance and as they” extend;ügthesides within€féâsing
growth of the caudalregion, they {sometimes beCome
dimensions, as in ihe Elyingèshe‘s.Ç
:{Ï
from the càudaln,the _serVicezrendered by :the
ns is—for the most partapaSsiäze;one.
-
the ‘verticalbalance when the;shais testing,or_not swimming ;
rapidly. When theTunny is, moving,— the-ns—Zafe —folded
Fm; 7.——The Eagle—Ray
d_fëét ;
*Î
it is said to y rather than" swim in the Water. '
(From Smitt,)
back- ïout of the way. ‘The pectorals and ventrals
look like ; and function as
__
essential. ."Th'e*shî can
,
'
Without
30 long as {the
;
OWing—to
_fa'r‘ïàS thebalancmg ”_'
'
of : oîther; ages; f
.
Thé} @-èçmiälä*ÿ areemployedn0tmym
.
ying-; orë- parachuüngbutf@rpaddhng°l‘SCl‘ambhng
feeling
‘: —.