ON ANNELIDA. 
41 
Isidore, of Seville, is the first author in whose works we find 
a particular chapter, the fifth, under the title of vermes; but 
he confines his attention there to lumbrici, ascarides, leeches, 
and worms that inhabit flesh. 
Albertus Magnus, in his book on the animals of the division 
exsanguia , speaks of the leech, and of the worm, in an alpha- 
betical order. 
Wotton has not extended the number of the animals of this 
class, and only speaks of the nereides under the name of ma- 
rine scolopendrce , in his book upon insects ; of leeches among 
the fish ; and of earth-worms under the name of intestini terrce; 
as well as of intestinal worms under the generic denomination 
of lumbrici; elmms in Greek, among the insects. 
Belon, in his history of aquatic animals, mentions, for the 
first time, under the name of lumbricus marinus , in opposi- 
tion to the earth-worm, which he names lumbricus terrestris , 
the animal which we now call arenicola . 
Rondelet went considerably farther : in fact, he not only 
described and gave figures of several nereides, still under the 
name of sea-scolopendra , but he remarked, for the first time, 
one of the tubicolent annelides, probably of the genus serpula. 
He also described and figured the common and the sea- 
leech, and also made known two species of sipunculi (zoo- 
phytes). 
Gesner collected all that had been advanced previously to 
his time by the ancients and moderns respecting the cheto - 
poda *, and the worms in general. But he added nothing 
new, and speaks of them only in articles altogether detached 
* We beg to use this term of M. de Blainville, as more conveniently- 
expressing the setigerous annelida, or those which move by means of bun- 
dles of seta or bristles. We may also occasionally employ his term apoda 
to express those which are destitute of such appendages, always, however, 
limiting the extent of those terms to the genera in the text. 
