C i2 7 3 
Part. His Mouth is very wide, and his Teeth are- 
let in Clufters in both the upper and under Jaws, 
and not in regular Rows, as was the vulgar Opinion : 
They are long and fmall like Spikes, moveable, and 
direded inward, in order 10 fccure his Prey from 
efcaping, after he has once laid hold on him. His 
lower Jaw is longer by far than his upper j having 
a large Capacity in the Skin of the former, to yield 
according to the Bulk of the Creature he feizes ; 
for with this Jaw, and the external Clufters of the 
Teeth of the upper Jaw, he holds it faft, whilft with 
another inner cartilaginous Jaw (whofe Teeth cor- 
refpond with an inner Clufter of Teeth in the upper) 
he chews and tears his Prey, fwallowing it by degrees 
as he minces it 5 neither the under Jaw, nor external 
Row of the upper, having any Share in the Mafti- 
cation at all. 
Altho’ he is faid to be of the cartilaginous kind, 
his Head is as bony as that of any Fifti ; having rough 
fpiny Ridges, ferving as Eye-brows. Between thefe 
arife three black limber Twigs ; the anterior is 
longed, the fccond fhorter, and the next fhorteftj 
each having at its Extremity a white flat Piece, with 
which, it is faid, he allures other Fifth to approach 
near enough to fteize on them. There are two 
others lefts confiderable on his Back, between thofe 
Fins or Webs, which, in him, mult be call’d hume- 
ral Webs. 
» 
Thele Webs are cartilaginous and flefhy, and are 
fupported by ftrong Bones, analogous to the humeral 
Bones ot ftome other Animals- Under each of thefe 
is a Sacculus or Marfupinm , which runs up the Side 
of his Head, 28 Inches deep, and 6 Inches wide: 
Thefe 
