NEMATOIDEA. 411 
Ciaveua, Oken, 
We find none of those appendages, the animal merely fastening 
itself by the mouth *. 
In these three last groupes the hooks of the mouth are well marked ; 
their strings are but slightly elongated, and sometimes the posterior 
portion of the body is provided with other appendages. 
In consequence of a recent examination, I place here the 
Cuonpracantuus, Laroch., 
Where the mouth is also furnished with hooks, and the sides of the 
body with appendages, so extremely various as to form and number, 
that in process of time we shall have to subdivide them. 
Thus, in some, we observe on each side two sorts of arms more or 
less elongated +. 
In others there are several pairs partly forked {, or even more 
ramous §. 
Some again have a slender neck, and a wide body slashed on the 
edges ||. 
At the end of this order I also place an animal which approaches it in 
several respects, but which may one day serve as the type of a new 
one. It forms a genus which I have named 
NEMERTES, Cuv. 
It isan extremely soft and elongated worm, smooth, slender, flattened 
and terminated at one extremity by a blunt point, pierced by a hole ; 
the other end, by which it fastens to its prey, is widened and very open. 
Its intestine traverses the whole length of the body. A second canal, 
probably connected with the process of generation, serpentines along 
its parietes and terminates in a tubercle on the margin of the wide 
opening. Messrs d’Orbigny and de Blainville, who saw the animal 
while alive, assure us that the wide aperture is its mouth. 
N. Borlasst, Cuv.; Borl., Cornw., XXVI, 12, is more than 
Act. Suec., 1751, and Encyc. Méthod., Vers, pl. LXXVIII, f. 13, i8 ;—L. Pernet- 
tiana, Blainy. ; Pernetti, Voy. aux Malouines, I, pl. i, f. 5, 6—two badly figured 
species. The ZL. huchonis, Schrank., Trav. in Bay. pl. I, f. A, D, is stil worse. 
There are several others. 
I think that this and the preceding group will re-enter the LERNEOMYZ&, Blainv. ; 
which in that case must be differently defined. 
* Lernea uncinata, Miill., Zool. Dan., I, xxxiii, 2;—L. clavata, Id., Ib., i. These 
CLAVELL& of Oken form the LERN XA proper of M. de Blainville. 
+ Lernea radiata, Mill., Zool. Dan., XXXIII, 4 ;—ZL. gobina, Id., Ib., 3. The 
first is the type of the genus ANONES, Oken. 
t Lernea cornauta, Id., Ib., 6, and several new species. 
§ Chondracanthus zeit, Laroche, Bullet. des Sc., May 1811, pl. 2, f. 2. 
|| Lernea trigle, Blainv., Dict. des Se. Nat., xxvi, p. 325; Cuv. Réen. Anim., 
pl. xv. 
N. B. M.de Biainville arranges my Chondracanthi in his genera LERNEENTOME, 
LERNACANTHE and LERNANTHROPE. 
N. B. The Lernea pectoralis, Mill., Zool. Dan. XXXIII, f. 1, is a Calygus, and 
the L. asellinu, It. West. Goth., III, 4, also seems to be one of the same, but dis- 
figured. 
EE2 
