Part L 
99 
Of Fijhef. 
of a Yelk, as in the Ovary of a Hen. Thefe fucceffivelv 
ripening, are found in the lower part, confiding of Yelk 
and White, and cover’d with the faid horny Cafe. Out of 
every one of thefe mature Eggs, another Foetus isalfo fuc- 
ceflively generated. Whereby it is intelligible, How this 
Filh produceth but one at once, and yet fo numerous a 
breed. 
The SKREW-GUT of the RAJA, defenbed by St ends 
Son. Sent by Dr. Swammerdamwixh fome other particulars 
mention’d in the firft Section. It winds between parallel 
lines like a Screw or Stair-cafe. 
The knobed TAIL of a THORNBAGK. Of an afh- 
colour, and about a yard long. 
The fpiked TAIL of a THORNBAGK, almoft black. 
The knobs of both are fo hard, that they will file Iron or 
Brafs. The Skin of this Filh is ufed for Knife-hafts, dec. 
The fmooth CAT-Fllh. Paftinaca marina Ixvis. Fabius 
Calumna, (a) hath deferibed two Species of this kind: but ,> Lib d „ 
both of them feem to be different from the Filh here. It is Aq. & Ter- 
fomewhat phantaftically Huffed 5 yet I Ihall give the De- rdl 
feription as well as it will admit. 
From the tip of his Snout, to his Tail, afoot and three 
inches, about a foot over, and I a foot (being, I fuppofe, 
thruft out fomewhat more than the natural dimenfion by 
the Huffing) in height. His Eyes I an inch long, two and i 
inches diftant, three and I behind his Nofe-end. Juft be¬ 
hind his Eyes,and a little more diftant, he hath two Spouts, 
one way, an inch and I over. His Snout prolonged for¬ 
ward an inch and I with an Obtufe Angle 5 and extended 
towards the fide-Fins, wherewith it is alfo joyned by the 
mediation of a Skmy-Bordcr i an inch broad. 'His Mouth 
very little, not an inch and I over 5 curioully rough-call 
like a file, underneath, and behind his Snout-end two inches 
and s. Over his upper Chap hang two little Labels above » 
inch long. 
His Gills are five on each fide, but towards the middle of 
his Belly. He hath four hde-Fins. His fore-Fins are 
ftretched out two inches in breadth, extended in length, 
towards the Tail, almoft a foot. The hinder-Fins are 
almoft tw o inches broad, and above an inch and i 
long. 
O 2 
The 
