ALDERMEN AND Potice. 425 
but about one fifth of the whole number inhabit fresh-water 
streams, or occasionally ascend them from the sea. 
Seale of Inches. 
mt 
- Mailed Gurnard, Peristedion malarmat, 2. Big Porgee, Pagrus argyrops. 3. Banded 
Ephippus, or Three-tailed Porgee, Ephippus faber. 4. The Sheepshead (famed for 
its exquisite flesh), Sarqus ovis, 5. mureaked or Rock Gurnard, Trigla lineata. 6, Ax- 
illary Bream, Pagellus acarne. Bearded Umbrina, Umbrina vulaaris. (The 
given as the representative of the family of the Maiqres, which includes 
kfish, Corvinas, the Chub, Kingfish, and the Drain, the latter noted for the 
loud drumming noise Which it mz akes, and the cause of whieh is still a mystery.) 8. 
Common Mackerel, Scombor scomber. 
The several species of the Pilot-fish, of which so many cu- 
rious stories have been told, also belong to the Mackerel fam- 
ily. The ancient naturalists asserted that the common pilot- 
fish, which is a pretty little fish about a foot in length, joins 
company with the tempest-tossed bark of the anxious mar- 
iner, indicates to him his nearest course to land, and leaves 
him as soon as it has fulfilled this kind office. 
Others, with much reason, deny this assertion, and allege 
that the pilot, like the shark, follows vessels for the purpose 
of obtaining a share of the garbage which may be thrown 
overboard. Certain, however, it is, that their perseverance 
in this respect is very singular, as is narrated in the case of 
an English vessel which was accompanied by two pilot-fish 
