A^JNELIDES. 
142 
His Hijporjceones have, besides, an azygous seta on the back of 
each ring. 
Tlie only species known is from America * * * § ** . 
Messrs. Audouin and M. Edwards also distinguish the l^rophonice, 
which have four bundles of shoi’t setae on each ring, and on the an- 
terior extremity a great number of long and brilliant setae which 
surround the mouth f. 
Nais, Lin. 
The Naides have an elongated body, the rings of which are less dis- 
tinct than in the Lumbrici. They inhabit holes made by them in the 
ooze, from which one half of their body projects and is constantly in 
motion. Black points are observed on the head of some of them, 
which may be taken for eyes. They are small worms, whose power 
of reproduction is as astonishing as that of the Hydra?. Several 
species are found in the rivers, &c. of France. 
Some of them have long setae 
And sometimes a long proboscis before §. 
Or several small tentacula at the posterior extremity j|. 
Others have very short setae 
Certain Annelides, hitherto referred to the Lumbrici, which con- 
struct tubes of clay, &c., in which they live, might be approximated 
to this genus 
Cla^mena, Sav. 
The Clymenae also appear to belong to this family. Their thick 
body has but few rings, which are mostly furnished with stout setae ; 
a little higher, and near the back, is a bundle of finer ones. There 
are neither tentacula nor appendages to the head. Their posterior 
extremity is truncated and radiated. They inhabit tubesff. 
* Hypogaon hirtum, Sav., Eg., Annel., p. 104. 
"t Trophonia harbata, Aud., and Edw,, Littor., de la France, Annel., pi. x, f. 
13 — 15. 
X Ndis elinguis, Miill., Warm., II ; — N. littoralis, Id., Zool., Dan., bfxx. 
§ Ndis proboscidea, Id., AVurm., I, 1 — 4, of wliif'h Lamarck makes his genus 
Stylaria. 
II Ndis digUata, Gm., cceca, Miill., Ib., V, the genus Proto, Oken. 
Ndis vermicidaris, Gm., Rees., Ill, xciii, 1 — 7 ; — N. serpentina, Id., xciii, 
Miill., lA', 2 — 4 ; — Lumbricus turbifex, Gm., Bonnet., Vers d’eau douce. III, 9, 10, 
Miill., Zool. Dan., Ixxxiv ; — Lumbricus Uneatus, Miill., AVurm., Ill, 4 — 5. 
** Lumbricus tubicola, Miill., Zool. Dan., Ixxv ; — Lumb. sabellaris, Ib., civ, 5. 
AI. Lamarck unites them 'with the Ndis tubifex, and makes it his genus Tubifex ; 
it requires, however, a new examination. 
tt Ctymena amphistoma, Sav., Eg., Annel., pl i, f. ; — Cl. lumbricalis, Ott. Fabr,, 
Aud. and Edw., Litt., de la France, Annel., pl. x, f. 1—6 ; — Cl. Ebiensis, Aud., and 
Edw., Ib., f. 8 — 12. 
