385 
PETEOMYZON. 
The body lengthened, smooth; head rounded, and continuous with 
the body; mouth circular, closing longitudinally, armed with tooth-like 
processes in rows. An opening on the top of the head; seven separate 
Openings of the gills arranged along each side. No nectoral or ventral 
fins; dorsal, anal, and caudal fins without rays. 
SEA LAMPREY. 
Lampeira, Lampreda, 
(( “ 
Peiromyzon inarinus, 
tt K 
(C 
tt tt 
“ lamproie, 
JONSION; p. 117, PI. 24, f. 5. 
‘Wn.LOtTGHBT; p. 10.5, PL G 2. 
Linnots. Bloch; PI. 77. Ouviee. 
Dosovan ; PI. 81. Jektns ; Manual, p. 520. 
Fleming; Br. Animals, p. 163. 
Yarbell; Br. Fishes, vol. ii, p. 598. 
Lacepede. 
This fish could not fail to be known to the Greeks and 
Romans, for it is common and of large size and excellency in 
the Tiber; but much obscurity has hung over it in consequence 
of the variety of names which were applied to it, and the 
confusion that followed the application of these names to other 
kinds of fish in consequence of some perhaps distant similarity 
of form or habit: a likeness in the last-named particular, even 
w'hen it was built only on fancy, or still more when on mistaken 
principles, being a sufficient inducement to class them together, 
or to confound them one with another. And this we find to 
be the case to a large extent even in our own day. It was 
commonly believed in ancient times that there was a fish, called 
Naucrates, Remora, or Echeneis, which was accustomed to lay 
hold of a ship, and by means of a magical power or occult 
quality which it possessed, was able to arrest its progress in 
the midst of its most rapid course, and fix it stationary even 
VOL. IV. 3 D 
