ON ANNELIDA. 41 



Isidore, of Seville, is the first author in whose works we find 

 a pailicular 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 sjDeaks of the nereides under the name oi ma- 

 rine scolopendrcs, in his book upon insects ; of leeches among 

 the fish; and of earth-worms under the name oiintestini terrce; 

 as well as of intestinal worms under the generic denomination 

 of lumbrici ; elmins in Greek, among the insects. 



Belon, in his history of aquatic animals, mentions, for the 

 first time, under the name of lumhrictis mariiius, in opposi- 

 tion to the earth-worm, which he names lumhricus terrestris, 

 the animal which we now call arenicola. 



Hondelet 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 tuhicolent 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 setce 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. 



